[LINUX] build a .tar.gz to be unpacked anywhere.

This is the easiest way for non-Debian systems to run Brackets without
creating a package for each distribution. The output can also be used to
ease packaging for other systems (hopefully).
Linux .tar.gz script should clean up after itself.
Linux .tar.gz: support more mimetypes via brackets.desktop

Now supports:
text/html
text/css
text/javascript
application/javascript
Linux uninstall script: optionally remove Brackets config.

When passed the -c parameter, uninstall.sh will remove the user's local
Brackets configuration.
Call xdg-desktop-menu for GUIs not monitoring ~/.local.

Only seems to be Unity that is not watching ~/.local/share/applications
right now.
Augment README.md.
When possible, automatically symlink to libudev.so.0

Only works on Ubuntu, Fedora, SUSE, and Arch.
Fix up some Markdown rendering errors in README.md.
remove white stripe
Merge pull request #439 from adobe/jeff/fixWhiteStripeEtAl

Different Fix for White Stripe on Aero
Merge pull request #433 from radicaled/linux_targzip

[LINUX] build a .tar.gz to be unpacked anywhere.
Merge branch 'master' into jeff/cef_1750