Worked on adding Entries dynamically, fixed issue #80 concerning LineChart and single Entry.
Huge changes in data model. Made model more generic.
Added feature to disable zooming the chart via double-tap (issue #96).
Worked on dynamically adding and removing Entries.
Worked on dynamically adding and removing Entries and DataSets.
Worked on custom formatter for YLabels (issue #68).
Code cleanup. Added feature to set custom formatter for values and labels.
Adjust build.
Merge readme.