Update README.md
Merge pull request #328 from antham/patch-1

Update README.md
Add new command projectile-run-async-shell-command-in-root
Lisp -> EL
[Fix #322] Align projectile-find-tag with latest ggtags
Make modeline lighter configurable
* projectile.el (projectile-find-file-in-directory): make directory an optional argument

to make non-interactive calls possible
Merge pull request #338 from tanzoniteblack/modifiable-mode-line

Modifiable mode line
Merge pull request #340 from jtatarik/ff-in-dir-optional-arg

projectile-find-file-in-directory: make directory an optional argument
Default files for projectile-grep with prefix arg
Mention freenode channel
Fix #149 Adding trailing / to user provided data
Merge pull request #342 from kleewho/fix-149-missing-slash

Fix #149 Additional / to fix user provided data
Merge pull request #335 from dougm/grep-default-files

Default files for projectile-grep with prefix arg
[Fix #319] Add the ability to jump to a file in any of the known projects
[Fix #315] Add the ability to specify projects not to be added to the
known projects list
[#315] New command projectile-remove-current-project-from-known-projects
Simplify projectile-remove-known-project
Add license badge
Fixes `projectile-ack` when used with a prefix argument