still trying to get it right
last time
Implemented the first button ( minusLemons)

Changed the ids for the xml of market.
Initialized the buttons in the MarketFragment.
Implemented the first button functionally
Added methods: updateTotalCost
Added member: to keep track of the totalCost
Finished implementing every item button
Implemented the buy button

The only thing left is the Business (money) does not update
Merge pull request #10 from icarreras/Market_Fragment_Branch

Market fragment branch