Placeholder prop isn't used

[iburakov]

placeholder prop doesn't affect new element's input, though it should, according to README ("The placeholder to show in the field for adding a new element to a list.")

Hardcoded value is used instead:

react-list-editable/src/index.js

Line 106 in 11cbdcf

placeholder='Press Enter'

[arpitbatra123]

@iburakov Thanks for the report! I shall fix this in a future release. Meanwhile, if you want to send a PR, I'd be happy to review and merge!