Contributing.md includes setup procedures (#2953)

closes #2934

CONTRIBUTING.md

@@ -1,3 +1,10 @@
+## Setup
+1. Download and install [visual studio community](https://www.visualstudio.com/downloads/)
+2. Download and install [Git](https://git-scm.com/download/win) (use git from windows command prompt OR use git and optional unix tools)
+3. Download the latest stable [nuget executable](https://dist.nuget.org/index.html), copy it to the base directory (where bootstrap.bat is)
+4. run bootstrap.bat, preferably from a command window to see any errors.
+5. Open the solution file, do a build to make sure everything is working properly. Restore nuget packages if necessary.
+
 ## Creating Issues
 - Have a look at the [FAQ](https://github.com/HearthSim/Hearthstone-Deck-Tracker/wiki/FAQ).
 - Check if a similar issue already exists (use the search function).