Merge pull request #15 from farahfouladi/master

Merge pull request #41 from lyeary/master
Merge pull request #42 from lyeary/master

Merge pull request #15 from farahfouladi/master
Merge pull request #16 from farahfouladi/master

Merge pull request #42 from lyeary/master
Merge pull request #43 from lyeary/master

Merge pull request #16 from farahfouladi/master
Merge pull request #17 from farahfouladi/master

Merge pull request #43 from lyeary/master
Merge pull request #44 from lyeary/master

merge please lab