add new feature, detached rulesets to index to include it
Merge branch 'master' of https://github.com/less/less-docs
globalVars / modifyVars
Update frameworks-using-less.md
Update detached-rulesets.md

change the output to the compiled code
Update features-overview.md
Update README.md

fix link to CONTRIBUTING.md
Update detached-rulesets.md

add a link to media query bubbling based on https://github.com/less/less-docs/pull/144
Merge pull request #145 from bassjobsen/patch-5

Update README.md
Merge pull request #143 from bassjobsen/patch-3

Update detached-rulesets.md
Merge pull request #144 from bassjobsen/patch-4

Update features-overview.md
Merge pull request #142 from bassjobsen/patch-2

Update frameworks-using-less.md
Update css-guards.md

Small sentence structure changes for clarity
Merge pull request #147 from sethlilly/patch-1

Update css-guards.md
Add precess resource
Merge pull request #149 from jshawl/patch-1

Add precess resource
online-less-compilers.md: `precess` moved from 'online IDEs' list to 'online compilers' list
Minor mistake in detached-rulesets.md corrected.

Corrected mismatch between less example and it's css output. Also changed the property to background-color to preserve consistency.
Merge pull request #150 from sin/patch-1

Minor mistake in detached-rulesets.md corrected.
Corrected example output