Merge pull request #92 from cognifloyd/typo3-flow-boilerplate

Add typo3-flow-boilerplate package type
Fixed spelling

Just a tiny fix, but something like this in the main README really makes me upset :)
Merge pull request #93 from ChristianGaertner/master

Fixed Spelling
If a package is uninstalled, then it must be removed from the local repository.. Closes GH-97.
Ensure unsupported sub types dont respond as supported. Closes GH-99. Closes GH-98.
Remove 5.3.3 as it always errors anyways
Support TYPO3 CMS installer for extensions. Closes GH-96.
Trailing commas are good
Remove unneeded comment
[MERGE] current installers master