Update install instructions

Updated install instructions to reflect new repo location and install command.
Merge pull request #2 from watsoncj/patch-2

Update manual install instructions
Add syntaxcomplete for css and html too
Default to using filename mode in ctrlp
Add note about requiring homeshick automatic installation
Update VUNDLE_TARGET to match latest install requirements
Add mapping to open a new tab
write on enter even if the buffer is not modified
Merge pull request #3 from watsoncj/enter-to-write-when-not-dirty

write on enter even if the buffer is not modified
Update comments for WriteBufferIfAble
Add back WriteBufferIfNecessary for window movement mappings
Merge remote-tracking branch 'dan/master'

Conflicts:
	README.md
switch.vim definitions for CoffeeScript and specs

- switch between `it`, `xit` and `it.only`
- switch between `describe`, `xdescribe`, and `describe.only`
- switch between `->`, `=>`, `(done) ->`, and `(done) =>`
allow resourcing of plugins.vim
fix spelling typo
Merge branch 'coffeescript-switch-definitions'
Merge branch 'fix-source-error'