change working directory when opening a file

It was discussed whether this should be optional or not and it was
agreed to just make this default behaviour for now.
merge pull request #11 from Osse
remove useless <silent>
bump to 1.3
handle spaces in paths

Closes #12.
run startify at start only for 'vim' and 'gvim'

Don't call Startify at start when using evim, view, etc.
correct startup check to consider '.exe'
merge pull request #13 from alexkunin
simplify startup regex check
use 'i' instead of 'e' for empty buffer

I guess most people are used to just write away via 'i' after entering
Vim. So this change adheres to them. (Say "Thanks!" to @Osse)

If you don't like this change consider creating an additional, hidden
key for creating the empty buffer:

let g:startify_empty_buffer_key = 'e'
change startup check regex once again

I'm terribly sorry for excluding all MacVim users.

Closes #14.
change startup check regex once again #2
ignore case
add color support without changing defaults
new option: g:startify_enable_special

If you set this variable to 0, [i] and [q] won't be shown.
screenshot: update
readme: clarify
readme: mention mouse support
use more idiomatic code style
bump to 1.4