Added if __name__ == "__main__" snippet for python-mode

.gitignore

@@ -1,3 +1,4 @@
 /*
 !/.gitignore
-!/.init.el
+!/.init.el
+!/snippets

snippets/python-mode/ifnm

@@ -0,0 +1,6 @@
+# -*- mode: snippet -*-
+# name: if __name__ == "__main__"
+# key: ifnm
+# group Idioms
+# --
+if __name__ == "__main__":