add new required R packages
fix capitalization
fix initfocus bug in plotutils
bump travis
Merge pull request #428 from twosigma/namespace

Namespace - wrap up
update resize maxWidth when browser window resizes
fix onzeroY not in fixFocus
cursor support, fix combplot title null
Merge remote-tracking branch 'origin/master' into byu/plot
Merge pull request #431 from twosigma/byu/plot

Byu/plot