Fixed bug where scope wasn't being populated.

Scope '<lang>:' is now being populated correctly for languages where the
scope only contains one source.<lang> string.

We now look for arrays of size 1 or greater, instead of 2 or greater.
Add support for C++ and QT docsets
Merge pull request #3 from davidolrik/master

Fixed populate scope bug.
Merge pull request #5 from tkadauke/master

Add support for C++ and QT docsets