Update readme with "opening an issue" informations

README.md

@@ -8,6 +8,28 @@ Clementine is a modern music player and library organizer for Windows, Linux and
 - Buildbot: http://buildbot.clementine-player.org/grid
 - Latest developer builds: http://builds.clementine-player.org/
 
+Opening an issue
+----------------
+### Ask for a new feature
+
+Please:
+
+ * Check if the new feature is not already implemented (Changelog)
+ * Check if another person didn't already open an issue
+ * If there is already an opened issue there is no need to comment "+1", it won't help. Instead, you can subscribe to the issue to be notified of anything new about it
+
+### Report a bug
+
+Please:
+ 
+ * Try with the latest developer build (http://builds.clementine-player.org/) to see if the bug is still present (**Attention**, those builds aren't stable so they might not work well and could sometimes break things like user settings). If if works like a charm although you see an opened issue please comment it to explain the issue was fixed
+ * Check if another person didn't already open an issue
+ * If there is already an opened issue, you can try to comment it to add precisions about the problem or confirm it
+ * If there isn't, you can open a new issue with an explicit title and much information as possible (OS, Clementine version, what steps will reproduce the problem...)
+ * Please use http://pastebin.com/ for logs/debug
+ 
+If there is no answers, it doesn't mean we don't care about your feature request/bug, it just mean we can't reproduce the bug or haven't time to implement it :o)
+
 Compiling from source
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