Add Majoras Mask, update gitignore

.gitignore

@@ -78,7 +78,7 @@ crashlytics-build.properties
 # VS configuration
 .vsconfig
 
-# UMotion Plugin
+# UMotion plugin
 /UMotionData/
 /Assets/UMotionEditor.meta
 /Assets/UMotionEditor/
@@ -87,3 +87,8 @@ crashlytics-build.properties
 /Mirror/
 
 /Assets/FR2_Cache.asset
+
+# Excluded Assets and Plugins
+/Assets/Plugins.meta
+/Assets/Plugins/Roslyn/
+/Packages/com.mibdev.fullscreen-editor/