Update text to be consistent with list of documented options.

Add numexpr to wherever pandas is

Fixes #173

(c) Copyright IBM Corp. 2016

Move the overview image up on README page

Add diagram of image relationships

(c) Copyright IBM Corp. 2016

Add hdf5 julia support to datascience stack

build JupyterHub singleuser images for each notebook stack

* create `.juliarc.jl` start up script to point Julia to conda libraries, specifically the hdf5 libraries installed through the h5py package in the scipy stack
* add the HDF5 Julia package

Update README.md to document HDF5 addition

Add -F option to force config load

Add the -F flag to julia expression execution to load .juliarc.jl before execution.

[ci skip] Add badges to stack READMEs

instead of master

and include checksummed download

to give it higher priority

Rebase all-spark-notebook on pyspark-notebook

To speed up build, reduce accidental disparity, ease maintenance

(c) Copyright IBM Corp. 2016

(c) Copyright IBM Corp. 2016

For every `*-notebook` stack, a `*-singleuser` image is also built

Switch to Mesos Jessie repository, and upgrade to 0.25

use current command for Python 2 kernel install

Add cacert to .curlrc in home directory

Specify `cacert=/etc/ssl/certs/ca-certificates.crt` in `/home/$NB_USER/.curlrc` so curl can locate the certificates.

Rebase datascience-notebook on scipy-notebook

README: Add badge for Travis CI

Fixes #139

(c) Copyright IBM Corp. 2016

Fixes #147

Add and install from the r channel with conda

Modified to install Apache Toree using pip

(c) Copyright IBM Corp. 2016

Clean apt-get list

Add dockerignores

Added instructions for connecting to spark on standalone mode.

Run `apt-get clean` after installing jq