Added announcement and syllabus and grading files
Small additions to grading file
changed the grading page
Changed the grading file and added a nojekylle file for gh-pages
added some lecture files
added another lecture file
added another lecture file
Added more lecture pdfs
Merge pull request #10 from bcaffo/gh-pages

added lecture files
Merge branch 'master' of github.com:DataScienceSpecialization/courses

* 'master' of github.com:DataScienceSpecialization/courses:
  Added more lecture pdfs
  added another lecture file
  added another lecture file
  added some lecture files
  Changed the grading file and added a nojekylle file for gh-pages
  changed the grading page
  Small additions to grading file
  Added announcement and syllabus and grading files
Add Week 2
Modified lecture slides