* Added dockerfiles for aztk r gpu
* Removed tensorflow/cntk cpu versions
* Enabled configure option for shared lib for python
* Removed temp paths
* Replaced python version with aztk version
* Cleaning up args
* Added variable definition for tensorflow, shorten lines
* Added rstudio server script
* Added rstudio server port to aztk sdk
* Added R dockerfiles
* Added new line on dockerfiles
* Pointing dockerfiles to new aztk-base
* allow any user or application in the server to write to the history server log directory
* conditionally install and use nvidia-docker
* status statements, and -y flag for install
* add example, remove unnecessary ppa
* rename custom script, remove print statement, update example
* add Dockerfile
* fix path in Dockerfile
* update Docker images to use service account
* updated docs, changed default docker repo for gpu skus
* make timing statements more verbose
* remove unnecessary script
* added gpu docs
* fix up docs and numba example