Merge branch 'master' of gitlab.cci.drexel.edu:ys554/ys554-cs265-winter2019

assn3/README.MD

 Written in python 3
 
-I used sample.db to test my codes. My code currentlt reads in exported environment variable, so I export sample.db as environment variable.
+I used sample.db to test my codes. My current code reads in exported environment variable, so I export sample.db as environment variable.
 
 Thank you!