bugfix: user input was interpreted as a regular expression
bugfix: user input was interpreted as a regular expression

It would crash if the input was an invalid regular expression, like 'aaa['.
It would match everything if the input was '..' or '.*'.
Now it's interpreting the input as a string.

prakhar1989/react-tags,frankleng/react-tokenized-input,frankleng/react-tokenized-input,leonascimento/react-tags,VladmirZhdanov1992/react-tags,prakhar1989/react-tags,frankleng/react-tokenized-input,VladmirZhdanov1992/react-tags,prakhar1989/react-tags,mrdannael/react-tags,cklab/react-tags,cklab/react-tags,mrdannael/react-tags,leonascimento/react-tags