Functionality for vector<vector[T]>> conversion added
Updated AUTHORS file /cc @ndawe. Added all other VectorVector[T] convertors except for boolean and string.
Updated generate.cxx loop so that first element is not null (there's always a loop of at least one element.) Added in vector<vector<obj>> structures into the TTree generated for hvector.
Updated readme
Updated LinkDef.h with c++ maps to build the dictionaries. Ran  and then  to rebuild hvector.root for tests
Updated unit tests for hvector.root.
Updated tree.pyx and recompiled _librootnumpy.cpp with aesthetic changes (blank lines, 4-space tabs.
Whoops, forgot to refix the paths for hvector.root. WHOOPS
Typo in LinkDef.h.
Merge pull request #142 from kratsg/master

Functionality for vector<vector[T]>> conversion added