create null (default) style
add CMSTDR style
include cmstdr into plotting example
add comment when no input
Merge pull request #233 from pwaller/matrix-as-numpy

Add rootpy.math.linalg.matrix.as_numpy for TMatrix->numpy.matrix
remove title from style
respect style's default canvas dimensions in Canvas.__init__
rm canvas dimensions from defaults.py
Merge pull request #235 from ndawe/master

MRG: respect style's default canvas dimensions in Canvas.__init__
Merge branch 'master' of https://github.com/rootpy/rootpy into cms-root-style
fix axis cmstdr style
Merge pull request #231 from wiso/cms-root-style

CMS ROOT style
handle gDirectory special case for ROOT older than 5.32.00
Merge pull request #237 from ndawe/master

handle gDirectory special case for ROOT older than 5.32.00
minor improvement in Makefile to use current python
check that type is a templated type before trying to create it in TreeBuffer and add new example demonstrating how to create trees containing user-defined types
Merge pull request #238 from ndawe/master

New example of how to create trees with branches of user-defined types
Add experimental BinProxy
More explicit name for including overflow bins