revert 2b597eb in master until it passes tests
Fixed a couple of bugs related to data.table change in fixdf.
Fixed bugs causing tests to fail.
Adapted tests to support latest version of lme4
Merge branch 'master' of github.com:RGLab/SingleCellAssay
lme4 1.0 compatibility
Merge branch 'master' of github.com:RGLab/SingleCellAssay

Conflicts:
	inst/tests/test-lrtest.R
	inst/tests/test-zeroinf.R
update vignette; fix bugs with non-convergence of glmer
Added test to isolate bug in data.table code.

The bug is in the rewrite of uniqueModNA, which shouldn't be using "get," but probably should be using with=FALSE, instead.  I don't have time to fix this now, but will take a crack later tonight or tomorrow.
Finally close #29
Update README.md
disable lmer in vignette and fix some zeroinf problems
Merge branch 'master' of github.com:RGLab/SingleCellAssay
Begin doc fixes
Doc fixes
disable lmer
Update README.md
More doc updates
Merge branch 'master' of github.com:RGLab/SingleCellAssay
fix error with degenerate factors
Add coercion method from ExpressionSets; DataLayer docs
start of rewrite of zlm code