Merge pull request #1 from jayjacobs/master

modified ggslackr to not require ggplot
Changed function names & added graphics device upload
README
README
removed need for bleeding edge data.table
general upload routines
channels fix
updated DESCRIPTION
source cleanup
slackrGroups, slackBot
version 1.1.1 - minor bug in new slackr function
1.2 release
README
spelling
rproj
CRAN submission
CRAN reference
1.2.1 fix for "groups" issue
README reorg
1.2.2 bugfix release