Don't support whitespace in tag name

[raysegantii]

1. Create a tag with whitespace, e.g. "hellow world"
2. client.tagged_snitches(["hello world"])

Failed with: TypeError: no implicit conversion of String into Integer

[gaffneyc]

@raysegantii Thank you for the bug report. We'll get it figured out in the next day or two.

[gaffneyc]

@raysegantii Quick note to let you know that we now support passing multiple tags without wrapping them in an array.

So both of these work now:
client.tagged_snitches(["hello world", "world hello"])
and
client.tagged_snitches("hello world", "world hello")

[raysegantii]

@gaffneyc Great one, thank you!