Add a project `README`

README.md

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+# glow_glyph
+
+[![Integration status](https://github.com/hecrj/glow_glyph/workflows/Integration/badge.svg)](https://github.com/hecrj/glow_glyph/actions)
+[![crates.io](https://img.shields.io/crates/v/glow_glyph.svg)](https://crates.io/crates/glow_glyph)
+[![Documentation](https://docs.rs/glow_glyph/badge.svg)](https://docs.rs/glow_glyph)
+[![License](https://img.shields.io/crates/l/glow_glyph.svg)](https://github.com/hecrj/glow_glyph/blob/master/LICENSE)
+
+A fast text renderer for [glow](https://github.com/grovesNL/glow), powered by
+[glyph_brush](https://github.com/alexheretic/glyph-brush/tree/master/glyph-brush)
+
+```rust
+use glow_glyph::{Section, GlyphBrushBuilder};
+
+let font: &[u8] = include_bytes!("SomeFont.ttf");
+let mut glyph_brush = GlyphBrushBuilder::using_font_bytes(font)
+    .expect("Load font")
+    .build(&glow_context);
+
+let section = Section {
+    text: "Hello glow_glyph",
+    ..Section::default() // color, position, etc
+};
+
+glyph_brush.queue(section);
+glyph_brush.queue(some_other_section);
+
+glyph_brush.draw_queued(
+    &glow_context,
+    window_width,
+    window_height,
+);
+```
+
+## Examples
+
+Have a look at
+  * `cargo run --example hello`
+  * `cargo run --example clipping`