Added issue template.

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,27 @@
+See https://github.com/FreeRDP/FreeRDP/wiki/BugReporting for details on bug reports first!
+
+* Please don't "report" questions as bugs
+
+Found a bug? - We would like to help you and smash the bug away.
+
+1. Before reporting a bug have a look into our issue tracker to see if the bug was already reported and you can add some additional information.
+1. If it's a new bug - create a new issue.
+ 
+ To save time and help us identify the issue a bug report should at least contain the following:
+
+    *  an useful description of the bug - "It's not working" isn't good enough - you must try harder ;)
+    * the steps to reproduce the bug
+    * command line you have used
+    * to what system did you connect to? (win8, 2008, ..)
+    * what did you expect to happen?
+    * what actually happened?
+    * freerdp version (e.g. xfreerdp --version) or package version or git commit
+    * freerdp configuration (e.g. xfreerdp --buildconfig)
+    * operating System, architecture, distribution e.g. linux, amd64, debian
+    * if you built it yourself add some notes which branch you have used, also your cmake parameters can help
+    * extra information helping us to find the bug
+
+* If you have question join us in irc (#freerdp on freenode) or write a mail to our mailing list.
+
+Thank you for reporting a bug!
+