Merge pull request #171 from ndawe/master

add libs arg to roosh
Switch travis-ci build to 64 bit ROOT binaries
Fix permission issue on travis-ci
Fix for #174
Fix permission issue on travis-ci
Merge pull request #174 from pwaller/issue-174

pip install --user rootpy fails due to distribute dependency
Fix permission issue on travis-ci
Merge pull request #176 from cdeil/travis64

WIP: Switch travis-ci build to 64 bit ROOT binaries
make libs positional arguments
reword
minor change