BUG: fix breakage on 2.6.
BUG: force unittest2 install (for 2.6 compat).
BUG: fix py26-specific install handling.
MAINT: fix travis configuration for 2.6.
MAINT: fix syntax issues in travis-ci config.
MAINT: fix stupid shell comparison error in travis-ci config.

Looks like I am doomed to never ever be able to choose = vs -eq
correctly in sh.
MAINT: re-enable all python versions in travis-ci.
Merge branch 'fix_py26'

Conflicts:
	okonomiyaki/platforms/epd_platform.py