Add CONTRIBUTING

CONTRIBUTING.md

@@ -0,0 +1,31 @@
+Compiling
+---------
+
+To compile on Windows, you need to:
+
+* Install Mozilla build setup tools: [here]().
+* Install Microsoft visual studio community edition [here]().
+* Within Visual Studio, setup the Blah API.
+
+* Open start-shell terminal and basically do the following:
+```
+wget -q "https://hg.mozilla.org/mozilla-central/raw-file/default/python/mozboot/bin/bootstrap.py"
+python3 bootstrap.py --no-interactive --application-choice=browser
+```
+If you choose to, you can now build Firefox Nightly as follows:
+```
+cd mozilla-unified
+./mach build
+./mach package
+./mach run # or just run it..
+```
+Or you can just forget about that, and remove the firefox tree:
+```
+rm -rf bootstrap.py mozilla-unified
+```
+To build the current windows setup.exe, we do the following:
+```
+git clone --recursive https://gitlab.com/librewolf-community/browser/windows.git
+cd windows
+./build.py all
+```