updated vimrc to use ir-whack

Also added ir-whack as a git submodule

.gitmodules

@@ -85,3 +85,6 @@
 [submodule "vim/vim.symlink/bundle/vim-ack"]
 	path = vim/vim.symlink/bundle/vim-ack
 	url = https://github.com/mileszs/ack.vim.git
+[submodule "vim/vim.symlink/bundle/ir-whack"]
+	path = vim/vim.symlink/bundle/ir-whack
+	url = git@github.com:nicknisi/ir-whack.git

vim/vimrc.symlink

@@ -114,7 +114,7 @@ set tm=500
 syntax on
 
 set background=dark
-colorscheme ir_whack
+colorscheme ir-whack
 
 " set number " show line numbers
 set relativenumber " show relative line numbers