New calculateChartPath method
Add change value function
Add change value details
Change path
Change path value update
Add update x labels function
Update Y labels
Add bar chart labels update
Update bar chart update
Add circle chart change value
Hide change value button on pie chart
Merge branch 'feature/dynamic_update_with_animate' into develop
Update readme for realtime update, #107
Merge remote-tracking branch 'origin/develop'

Conflicts:
	PNChart.podspec