Update README.md
Modifying css regex to ignore querystrings.

Fixes issue where custom fonts can’t be rev’ed because they contain a
question mark followed by fragment identifier in the url. E.g.
`src:url("/styles/fonts/icons.eot");
	src:url("/styles/fonts/icons.eot?#iefix") format("embedded-opentype"),
		url("/styles/fonts/icons.woff") format("woff"),
		url("/styles/fonts/icons.ttf") format("truetype"),
		url("/styles/fonts/icons.svg?#icons") format("svg”);`
Update README.md

Fixed file paths in "Use cases" section so that they correspond with the examples.
Update README.md
Add support for async attr in script blocks
fixed configwriter to process post config (incl test and docu)
Merge pull request #264 from lukebussey/css-font-fix

Fixing #221 & #234 where question mark followed by fragment identifier in custom font urls prevents revving.
Merge pull request #271 from yabrams/patch-1

Update README.md
tests for async blocks
Update .travis.yml
Update package.json
package.json: updating authors
useminPrepare accepts array of root directories
"Twitter Bootstrap" is now simply Bootstrap

See http://getbootstrap.com/about/#brand
Merge pull request #301 from cvrebert/master

"Twitter Bootstrap" is now simply Bootstrap
Fix indentation according to JSHint
Remove blocks if there are no linked assets
Lock Grunt to 0.4.1

"~0.4.1" was using a recently released 0.4.3, which introduced a
breaking change where tasks were executed asynchronously. This caused
tests to fail because assertions were executed before tasks finished
doing their thing.
Merge pull request #314 from silvenon/empty

Remove blocks if there are no linked assets
Merge pull request #269 from DexterV/master

Update README.md