example scenario in README

README.md

@@ -1,6 +1,7 @@
 # gh-stack [![Check if compilation works; no tests yet!](https://api.travis-ci.org/timothyandrew/gh-stack.svg?branch=master&status=passed)](https://travis-ci.org/timothyandrew/gh-stack)
 
 - [Usage](#usage)
+  - [Examples](#examples)
 - [Strategy](#strategy)
 - [Disclaimer](#disclaimer)
 
@@ -63,6 +64,148 @@ $ gh-stack autorebase 'stack-identifier' -C /path/to/repo
 $ gh-stack rebase 'stack-identifier'
 ```
 
+### Examples
+
+*This is a quick overview of the ways this tool could be used in practice.*
+
+1. Write some code, create local commits/branches:
+    ```bash
+    $ git checkout -b first
+    # Write code
+    $ git add -A; git commit -m 'first'
+  
+    $ git checkout -b second
+    # Write code
+    $ git add -A; git commit -m 'second #1'
+    # Write code
+    $ git add -A; git commit -m 'second #2'
+  
+    $ git checkout -b third
+    # Write code
+    $ git add -A; git commit -m 'third'
+    ```
+
+2. Your Git tree now looks like:  
+    ```bash
+    * 42315c4 U - (third) third
+    |
+    * 6db2c28 U - (second) second #2
+    |
+    * 5746a83 U - second #1
+    |
+    * e845ded U - (first) first
+    |
+    * 8031011 U - initial commit
+    ```
+
+3. Push each branch:
+    ```bash
+    $ git push origin first:first second:second third:third
+      * [new branch]      first -> first
+      * [new branch]      second -> second
+      * [new branch]      third -> third
+    ```
+
+4. Create a PR for each new branch (starting at `first`), and:
+    - Ensure that all the PRs have a common identifier in their title (I'll use `[EXAMPLE-17399]` here). This identifier (currently) is required to be unique across all GitHub repositories accessible to you (including _all_ public repositories).
+    - Set the `base` for each PR to the branch preceding it. Here, `first`'s PR is set to merge into `master`, `second`'s PR is set to merge into `first`, and `third`'s PR is set to merge into `second`.
+
+5. Log all PRs in the stack:
+    ```bash
+    $ gh-stack log 'EXAMPLE-13799'
+     #1: [EXAMPLE-13799] PR for branch `first` (Base)
+     #2: [EXAMPLE-13799] PR for branch `second` (Merges into #1)
+     #3: [EXAMPLE-13799] PR for branch `third` (Merges into #2)
+    ```
+
+6. Annotate all PRs with information about the stack:
+    ```bash
+    $ gh-stack annotate 'EXAMPLE-13799'
+     1: [EXAMPLE-13799] PR for branch `first`
+     2: [EXAMPLE-13799] PR for branch `second`
+     3: [EXAMPLE-13799] PR for branch `third`
+     Going to update these PRs ☝️  Type 'yes' to continue: yes
+     Done!
+    ```
+
+   This (idempotently) adds a table like this to the description of every PR in the stack:
+       <img src="img/annotate.png" width="700" />
+
+7. Make changes to a branch that rewrites commits in some way (amend, remove a commit, combine commits):
+    ```bash
+    $ git checkout first
+    # Do some work
+    $ git add -A; git commit --amend -m 'amended first'
+    ```
+
+   History has now diverged, and this will cause conflicts with dependent PRs when `first` is (force-)pushed.
+     ```bash
+     * e7cb9c6 U - (HEAD -> first) amended first
+     |
+     | * 42315c4 N - (origin/third, third) third
+     | |
+     | * 6db2c28 N - (origin/second, second) second #2
+     | |
+     | * 5746a83 N - second #1
+     | |
+     | * e845ded N - (origin/first) amended first
+     |/
+     |
+     * 8031011 U - (origin/master, master) initial commit
+     ```
+
+8. Use the `autorebase` subcommand to fix this inconsistency (it requires a path to a local checkout of the repository):
+    ```bash
+    $ gh-stack autorebase --repo /tmp/test EXAMPLE-13799
+    Checking out Commit { id: 803101159653bf4bf92bf098e577abc436458b17, summary: "initial commit" }
+ 
+    Working on PR: "first"
+    Cherry-picking: Commit { id: e7cb9c6cdb03374a6c533cbf1fc23a7d611a73c7, summary: "amended first" }
+ 
+    Working on PR: "second"
+    Cherry-picking: Commit { id: 5746a83aed004d0867d52d40efc9bd800b5b7499, summary: "second #1" }
+    Cherry-picking: Commit { id: 6db2c2817dfed244d5fbd8cbb9b8095965ac9a05, summary: "second #2" }
+ 
+    Working on PR: "third"
+    Cherry-picking: Commit { id: 42315c46b42044ebc4b57a995a75b97699f4855a, summary: "third" }
+ 
+    ["b45e5838a93b33411a5f0c9f726bc1987bc71ff5:refs/heads/first", "93170d2199ed9c2ae30d1e7492947acf477fb035:refs/heads/second", "a85a1931c44c3138d993128591af2cad2ef6c68d:refs/heads/third"]
+    Going to push these refspecs ☝️  Type 'yes' to continue: yes
+    Enumerating objects: 12, done.
+    Counting objects: 100% (12/12), done.
+    Delta compression using up to 8 threads
+    Compressing objects: 100% (8/8), done.
+    Writing objects: 100% (11/11), 907 bytes | 453.00 KiB/s, done.
+    Total 11 (delta 3), reused 0 (delta 0)
+    remote: Resolving deltas: 100% (3/3), done.
+    To github.com:timothyandrew/test.git
+     + e845ded...b45e583 b45e5838a93b33411a5f0c9f726bc1987bc71ff5 -> first (forced update)
+     + 6db2c28...93170d2 93170d2199ed9c2ae30d1e7492947acf477fb035 -> second (forced update)
+     + 42315c4...a85a193 a85a1931c44c3138d993128591af2cad2ef6c68d -> third (forced update)
+ 
+    Updating local branches so they point to the new stack.
+ 
+      + Branch first now points to b45e5838a93b33411a5f0c9f726bc1987bc71ff5
+      + Branch second now points to 93170d2199ed9c2ae30d1e7492947acf477fb035
+      + Branch third now points to a85a1931c44c3138d993128591af2cad2ef6c68d
+    All done!
+    ```
+
+    - This restores local history to a flat list and pushes the tip of each branch up to update the PRs themselves.
+      ```bash
+      * a85a193 N - (HEAD, origin/third, third) third
+      |
+      * 93170d2 N - (origin/second, second) second #2
+      |
+      * 61f64b6 N - second #1
+      |
+      * b45e583 N - (origin/first, first) amended first
+      |
+      * 8031011 U - (origin/master, master) initial commit
+      ```
+  
+    - If conflicts are encountered, `autorebase` will pause and allow you to fix the conflicts before resuming.
+
 ## Strategy
 
 This is a quick summary of the strategy the `autorebase` subcommand uses:

src/api/search.rs

@@ -109,6 +109,8 @@ pub async fn fetch_pull_requests_matching(
         .into_iter()
         .map(|item| item.unwrap());
 
+    println!("{:?}", items);
+
     let responses: Vec<_> = join_all(items.map(|item| item.json::<PullRequest>()))
         .await
         .into_iter()

src/main.rs

@@ -135,7 +135,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
             let identifier = m.value_of("identifier").unwrap();
             let stack = build_pr_stack(identifier, &credentials).await?;
 
-            let repo = m.value_of("repo").unwrap();
+            let repo = m.value_of("repo").expect("The --repo argument is required.");
             let repo = Repository::open(repo)?;
 
             let remote = m.value_of("remote").unwrap_or("origin");