Tips: consider standardizing the data attributes

[hidegh]

data-josh-anim-name="lightSpeedInRight"
data-josh-duration="1500ms"
data-josh-anim-delay="3.5s"
data-josh-iteration="infinite"

• isnt the duration and iteration related to anim?
• the why don't we use data-josh-anim- prefix?
• or why even use data-josh-anim- and not just data-josh- since the library itself is around animation ❓

as this is a breaking change, advising:

1. updating major version and use just data-josh-delay, etc. names
2. updating readme and leave a note on this there