Huge rewrite to submit-queue and mungegithub

- Move ALL read/write from github into github/ package
- Move shared flags and functions between submit-queue and mungegithub
  into that github/ package
- Create 'config' objects to make function calling significantly easier
- Use cobra for the commands

Author: eparis

.gitignore

@@ -0,0 +1,23 @@
+# OSX leaves these everywhere on SMB shares
+._*
+
+# OSX trash
+.DS_Store
+
+# Eclipse files
+.classpath
+.project
+.settings/**
+
+# Emacs save files
+*~
+\#*\#
+.\#*
+
+# Vim-related files
+[._]*.s[a-w][a-z]
+[._]s[a-w][a-z]
+*.un~
+Session.vim
+.netrwhist
+