Copy git lesson files as basis for hg lesson.
Port index and intro pages to hg.
Delete Git staging area image that has no Mercurial counterpart.
Delete image re: Git HEAD~* mapping to rev ids; unneeded for Mercurial.
Port the version control "A Better Kind of Backup" section to Mercurial.
Fix typos re: review by @r-gaia-cs.
First version of sklearn intro IPython Notebook
Removed lesson number
Added an outline

Also removed a cell
Print number of samples in the dataset
Use StandardScaler instead of scale

For simplicity just scale all of the dataset for
grid search.
see: https://github.com/swcarpentry/bc/pull/443#issuecomment-40677511
Optimize max_features instead of n_estimators

Useless to estimate n_estimators, the more the better!
Use a Pipeline to add feature scaling
README.md: Convert 'boot camp' -> 'workshop'

Following Amy Brown's [1]:

> We borrowed the "bootcamp" terminology from Hacker Within and also
> various fitness training camps, but as we branch out into parts of
> the world with a more violent recent history I'm less comfortable
> with the term.

The consensus on that issue was to change back to our old 'workshop'
terminology.  The swcarpentry/bc repository hasn't made the shift yet,
but there's no reason I can't embrace the future here ;).

[1]: https://github.com/swcarpentry/bc/issues/240
Merge branch 'master' into bc-namespaced

* master:
  README.md: Convert 'boot camp' -> 'workshop'
Merge branch 'bc-namespaced' of git://tremily.us/swc-setup-installation-test into installation-test-bc-namespaced

* 'bc-namespaced' of git://tremily.us/swc-setup-installation-test:
  README.md: Convert 'boot camp' -> 'workshop'

Conflicts:
	setup/README.md

The conflics were due to Ivan's 'boot camp' -> 'bootcamp' changes [1]
which I hadn't pulled into my upstream installation-test branch.  The
end result (using 'workshop' to refer to our sessions) is the same,
but my upstream history just skips the 'bootcamp' phase.

[1]: https://github.com/swcarpentry/bc/pull/174
Initial lesson about python string formatting using the format() method
Removed feature scaling, expanded acronym RMS

Feature scaling is not necessary for Decision Tree and Random Forests:
https://github.com/swcarpentry/bc/pull/443#issuecomment-41324381
Removed solutions
Clarified the note about field widths and added an example