Rename fittings to fitting_results
Adds initialization by bounding box.

As a by pass of this:

- perturb_shape becomes a public method on Fitters.
- fit_images disappears from Fitters
Improves documentation
Fixed align_shape_with_bb
Changes fit in SDMs to the have the new syntax.

- defaults verbose to False
Forgot self in fit method of SDM
Merge remote-tracking branch 'upstream/master' into fitter_framework_fixes
Merge pull request #306 from jalabort/fitter_framework_fixes

Flexible initialization for Menpo Fitters