Added .gitgnore and Updated todo.txt

.gitignore

@@ -0,0 +1,3 @@
+bin/*
+build/*
+.vs/*

.hgignore

@@ -1,3 +0,0 @@
-bin/*
-build/*
-CMakeLists.txt.*

todo.txt

@@ -1,5 +1,4 @@
 Todo:
-	- Migrate from bitbucket to github and from mercurial back to git
 	- Add warning to genie build script when running on windows and WindowsSdkVersion cannot be found. This happens when the script is not run from vcvarsall command prompt
 	? Rethink/remove the game executable and game library split.
 	- Refactor all global application state into 'Application_Context' struct. A single global instance of which is available everywhere
@@ -190,4 +189,5 @@ Done:
 	* Implemented screen coordinate to ray conversion and ray-sphere collision
 	* Split todo and readme into two files
 	* Replace all renderer_check_gl calls with GL_CHECK macro
-	* Fixed Console bug when enabled in editor mode
+	* Fixed Console bug when enabled in editor mode
+	* Migrated from bitbucket to github and from mercurial back to git