Merge pull request #2 from roryk/master

Add command for adding a channel to documentation.
Add bcbio-vm boto dependency
Update cpat installation to avoid installing internal bx-python and pysam. Rip out distutils magic in setup file
Bump pysam to 0.8.0 with fixes for handling SAM DS headers. Thanks to Severine Catreux
Add build target for cnvkit copy number caller
Update bcbio-nextgen-vm and bcbio-nextgen conda packages. Fixes chapmanb/bcbio-nextgen-vm#19
Update bcbio-nextgen, bcbio-nextgen-vm and ipython-cluster-helper to latest versions
Bump cnvkit to latest 0.2.3 release
Add elasticluster conda package and dependency to bcbio-nextgen-vm
Update cnvkit, bcbio-nextgen and bcbio-vm
Add initial binstar build files for future builds of non-linux packages on binstars. Updates to dependencies
conda package updates for bcbio-nextgen-vm, bcbio-nextgen, elasticluster and ipython-cluster-helper
cnvkit: don't depend on atlas for OSX installs.