Merge pull request #1 from neowinx/master

Base modules added
Merge pull request #2 from neowinx/master

Update notes.md
Merge pull request #3 from neowinx/master

Sell and Buy modules added
Merge pull request #4 from neowinx/master

Added json responses
Reading data from file
Merge pull request #1 from emendez84/master

Changes from emendez