Adding tutorial images for README. Editing gitignore.

Author: Persomatey

.gitignore

@@ -24,6 +24,7 @@ ExportedObj/
 *.svd
 *.pdb
 *.opendb
+*.log
 
 # Unity3D generated meta files
 *.pidb.meta
@@ -37,4 +38,5 @@ sysinfo.txt
 *.unitypackage
 
 # For the mac guys
-*.DS_Store
+*.DS_Store
+JSONSerializerPlugin/Logs