Added independent chart examples.
Added new charts examples to TravisCI testing.
Merge branch 'master' into feature/charts_examples
Added .html suffix to the example names.
Fixed names errors and typos.
Fixes py3 incompatibility and typo in bar names.
Fixed missed 's' from histograms in the json gallery.
Deleted from the gallery, charts can not be embeded yet.
Added deleted sinerror example.
Fixed missed colons.
Update examples to use a pandas-like approach to deal with the data.
Unskipped charts.ipynb.
Merge branch 'master' into feature/charts_examples
Merge pull request #1015 from ContinuumIO/feature/charts_examples

Added independent chart examples.