Merge pull request #33 from dan-c-underwood/master

Fix for issue #13
Merge pull request #34 from dan-c-underwood/master

A few more grammar fixes
Minor syntax tweaks
Add audio usage instructions
Merge pull request #35 from MiniGirlGeek/patch-1

Add audio usage instructions
Resolve merge conflict
Add video usage instructions
Merge pull request #37 from MiniGirlGeek/patch-1

Add video usage instructions
Tidy up
Merge branch 'master' of github.com:raspberrypi/documentation
More config-txt.md tweaks

Fix bad merge
Use level-4 header exclusively for config parameters
Other small changes
Change codecs header
Add empty installing Codecs page
typo
typo
Merge pull request #2 from raspberrypi/master

Syncing with origin