rename Usage.md to usage.md

alexchicn · alexchicn · commit 648fd7bde802 · 2018-01-26T18:39:50.000+08:00
diff --git a/docs/usage.md b/docs/usage.md
@@ -0,0 +1,7 @@
+# Usage
+
+Generate the `makefile` or `vs project` by [CMake].
+
+For now, just build to a static library - `libgltf.(lib/a/dylib)`.
+
+[CMake]: https://cmake.org
