improving docs for event tracking
Merge pull request #1098 from Wylkon/3.2.0

Improved color's documentation and added images to explain how we workin...
adding another way to init event tracking
Adjusting xAxis charts example.
Adjusting CSS custom fields. #1050
Merge pull request #1099 from renatocn/3.2.0

Nova maneira de inicializar o tracking de eventos
Merge pull request #1100 from antoniojunyor/3.2.0

Small adjust and custom field
Fixed ls-box margin bottom