Fix display of hint text

1.0.2

Updated docs and version number, ran dartfmt

Null Safety Stable Channel

1.0.0

Updated example to null safety

0.0.3

Added additional documentation.

0.0.2

Second submission to pub.dev. Got score of 100/110, still needing to figure out what it means by '0 out of 3 API elements (0.0 %) have documentation comments.'

0.0.1

Initial submission to pub.dev. Got 80/110 score due to formatting, documentation issues.