Added Data to Lab 2

Added Data to Lab 2
Added Data to Lab 3

Added Data to Lab 3
Added Data to Lab 4

Added Data to Lab 4
Added Data to Lab 5

Added Data to Lab 5
Added Data To Lab 6

Added Data To Lab 6 and corrected some errors in Lab 3, 4, 5.
Added Data To Lab 7

Added Data To Lab 7
Merge pull request #1 from gopalrao000/master

All labs have been converted to markdown. Thanks!