Add step definition to fill form fields of type input Text with the provided table according to their attributes

[TasneemNatshah]

Example:

Using ID and Class

When I fill in the following: by attr
            | uname | John Smith |
            | pwordcss | 1234 |

Using placeholder

When I fill in the following: by its "placeholder" attribute
            | Your full name | John Smith |
            | Your Password | 1234 |