update for Rpubs
Merge branch 'master' of https://github.com/gdwangh/coursera-dataScientists-9-Developing-Data-Products

Conflicts:
	courseproject/part2-Rpresenter/weatherEvent/weatherEvents-rpubs.html
update slidify for course project part2 to sumbit to Rpubs
Merge branch 'master' into gh-pages
Merge branch 'gh-pages' of https://github.com/gdwangh/coursera-dataScientists-9-Developing-Data-Products into gh-pages