convert the text to lower case

[Mengying Zhou]

hi,
thank you for your awesome work.

this is not a bug, just a usage precautions.
When you using this package, you need to convert the text to lower case by manual.

for example:
the result of parse('Our') is blank, but parse('our') works.

thx
Mengying

[Christopher Brown]

Good point, thanks for the precaution! 😉

I wasn't doing that in my example 😞, much less indicating the importance of doing so.

Fixed in 60dbdc1 — improved documentation.