TST : fix travis to actually use current head
TST : give up on using conda recipe for now

 - travis makes a shallow clone of the target repo
 - conda-build tries to make a clone of the shallow clone which fails
Merge pull request #150 from tacaswell/travis_conda_fix

Travis conda fix
MNT: Removed outdated project_to_sphere function

- The functionality of project_to_sphere is covered by
  processs_to_q
TST: Testing of reference image subtraction implemented
MNT: Missed some renames in the refactor
MNT: Added whitespace in conda yaml file
MNT: Added test for nx=None in refine_center test for 100% coverage
MNT: Added coverage output folder to .gitignore
ENH: Moar test coverage
MNT: Docstring and new class attribute on XrayLibWrap
MNT: dict -> verbosedict, added class attribute to XrayLibWrap's
MNT: Moar test coverage
MNT: Overhaul of 2D -> 1D and added tests for it

- renamed function
- added test coverage for it
- fixed some PEP8 violations
ENH: 100% test coverage, woo!
MNT: 100% coverage on 2D->1D image conversion