Merge pull request #2020 from micbou/readme

[READY] Fix installation entries and links in README

README.md

@@ -6,11 +6,11 @@ YouCompleteMe: a code-completion engine for Vim
 
 - [Intro](#intro)
 - [Installation](#installation)
-    - [Mac OS X](#mac-os-x-installation)
-    - [Ubuntu](#ubuntu-linux-x64-installation)
-    - [Fedora](#fedora-linux-x64-installation)
-    - [Windows](#windows-installation)
-    - [FreeBSD/OpenBSD](#freebsdopenbsd-installation)
+    - [Mac OS X](#mac-os-x)
+    - [Ubuntu Linux x64](#ubuntu-linux-x64)
+    - [Fedora Linux x64](#fedora-linux-x64)
+    - [Windows](#windows)
+    - [FreeBSD/OpenBSD](#freebsdopenbsd)
     - [Full Installation Guide](#full-installation-guide)
 - [Quick Feature Summary](#quick-feature-summary)
 - [User Guide](#user-guide)