Customize progress bar

[kanwalNayyer]

Hi,
i am using your library to show a step progress bar. My requirements are little different from your designs.

1. can i show strings instead of integers in markers text?
2. can we change the check point line to dot?
   i have attached a screen shot of what i required.let me know if i can achieve my requirements using your library.
   Thanks in advance
   

[marcus-vinicius-freitas]

I've created a PR addressing this issue.