Add Syntastic andvim-textobj-rubyblock

(vim-textobj-user is necessary for -rubyblock)
Enable matchit
Add vimrc alias
Add vim-bundler plugin
Auto-save before running RSpec
cucumber bindings
Add rubocop.vim

https://github.com/ngmy/vim-rubocop
Add syntax checking with Rubocop
Change pry binding to insert before current line
ignore .netrwhist