Merge pull request #13 from ga-students/lab_dev

lab 4
clean up
added solution to lab 2 - Auto-mpg
Merge pull request #14 from sampathweb/master

added solution to lab 2 - Auto-mpg
lab 3 - Pres Elections Solution
Merge pull request #15 from sampathweb/master

lab 3 - Pres Election Exercise Solution
added files for lab06
lab 05 - Logistics Reg
Merge branch 'master' of https://github.com/ga-students/DAT_SF_11
Merge pull request #16 from sampathweb/master

lab 05 - Logistics Reg
added kaggle titanic dataset
Merge pull request #17 from sampathweb/master

added kaggle titanic dataset
Merge branch 'master' of github.com:ga-students/DAT_SF_11 into lab_dev
added some annotations, clarified some tasks