Add missing release documentation

CONTRIBUTING.md

@@ -57,6 +57,7 @@ Do the following steps:
 
 * Check unit tests are passing
 * Change version number at the top of `qompoter.sh` and `package.json`
+* Change version number on the Installation guide (README file + index.md on `gh-pages` branch)
 * Compute MD5 and SHA512 sums and update README file + index.md (on `gh-pages` branch) with them
 
 ```
@@ -69,6 +70,6 @@ $ sha512sum qompoter.sh
 * Check changelogs are updated
 * Create a commit and push these changes
 * Run `resources/create-deb-package.sh <version number>`
-* Run `npm publish`
 * Create the release on Github and copy/paste changelogs on it
+* Run `npm publish`
 * Optional: Create a new ticket on the website

README.md

@@ -42,19 +42,19 @@ It should also work on FreeBSD and more widely on Windows (Cygwin or Mysys comma
 ```bash
 $ npm install -g qompoter
 $ qompoter --version
-Qompoter v0.5.1
-Dependency manager for C++/Qt by Fylhan
+Qompoter v0.6.0
+Light dependency manager for C++/Qt by Fylhan
 ```
 
 ### From scratch
 
 Download it from Github and move it to a place accessible in the `PATH`:
 
 ```bash
-$ wget https://github.com/Fylhan/qompoter/releases/download/v0.5.1/qompoter.sh -O qompoter.sh && sudo mv qompoter.sh /usr/bin/qompoter
+$ wget https://github.com/Fylhan/qompoter/releases/download/v0.6.0/qompoter.sh -O qompoter.sh && sudo mv qompoter.sh /usr/bin/qompoter
 $ qompoter --version
-Qompoter v0.5.1
-Dependency manager for C++/Qt by Fylhan
+Qompoter v0.6.0
+Light dependency manager for C++/Qt by Fylhan
 ```
 
 The MD5 sum of qompoter.sh v0.5.1 version is `6975405fd3b5cda0164765c870dedcb6`.