Rewrite Rakefile

Now it's all neato and aggressive!
Clean ups
Clean up my gitignore
Delete the showtab after plugin

I don't think this was ever working... Darn.
Pretty much rewrite Rake::FileTask

for better or worse, dunno
Delete submodule vim/bundle/ctrlp
Replace copy of YAIFA with submodule
Ruby, swapit & surround now are all submodules
Space, speeddating & unimpaired are also submodules
20 vim plugins!

Some of them I already had installed, but now these are all git submodules:

- reimin
- gundo
- repeat
- abolish
- dispatch
- rails
- rake
- eunuch
- rsi
- rbenv
- jdaddy
- vinegar
- bundler
- tbone
- LargeFile
- ag
- markdown
- endwise
- fugitive
- delimitMate

I basically went down @tpope's list of plugins and looked at each repository :-P