fix intro survey link
Merge branch 'gh-pages' of github.com:beautyjoy/bjc-r into gh-pages

* 'gh-pages' of github.com:beautyjoy/bjc-r:
  Update running_script_from_command_line.html
  fixed snap tag
  typo
  still fixing images...someone turned all the /python into /Python wth...
  fixing images on page3 of python lab
  fixing images on page3 of python lab
  typo
  fixing page 2
  fixing the intro page
  typos