Make a note on using git submodule before building tests
Fix unit tests
Fix misspelled instruction
Add missing return statements
Fix up source so that we can compile with clang
Merge pull request #2 from hoelzro/master

Fixes and such
Merge branch 'master' into unstable

Conflicts:
	lib/qbrt.cpp

That code in qbrt.cpp has been deleted on the unstable branch so the
conflict was a false positive