remove sRGB color fix for mac build

- in version 3.2 of Mac port, this fix is not necessary
Merge pull request #66 from lewang/unfix-mac-srgb

the sRGB fix is not necessary for Mac build 3.2+, also post Mountain Lion? (need confirmation)
tone down widget-field border brightness
Add support for ERC

* User input is faded in order to focus on messages by others
* Keywords are same color as matched parens
* Nicks of others are unbolded cyan
* Server notices are unbolded blue
* Timestamps are faded, not bright

Looks best with the solarized-dark theme.
Make keywords orange

Others don't seem to like this quite as much, so keeping it out of the initial pull request.
Merge pull request #74 from mwolson/master

Add support for ERC
Merge pull request #69 from lewang/fix-widget-border

tone down widget-field border brightness
Adding colors for shell-mode and term-mode
Added instructions for installing via marmalade
Merge pull request #79 from iainbeeston/patch-1

Added instructions for installing via marmalade
Some more info for bug reporting.
Add support for git-gutter
Add support for bm.el
Merge pull request #78 from leea/shell-term-colors

Use solarized colors for shell-mode and term-mode
Merge pull request #83 from hadronzoo/master

Add support for git-gutter and bm.el
Ignore byte-compiled files.