[doc] Add back heading to index.md

behnam · behnam · commit 11f144392d4e · 2017-09-01T10:08:34.000-07:00
diff --git a/src/doc/index.md b/src/doc/index.md
@@ -1,5 +1,7 @@
 % Cargo, Rust’s Package Manager
 
+# Installing
+
 ### Install Stable Rust and Cargo
 
 The easiest way to get Cargo is to get the current stable release of [Rust] by
