Detection of unicode characters in the `text` by trying to decode.
Updated version.
Convert unicode paramets to utf-8.
fix docs url
Merge pull request #11 from ltworf/raise_exceptions

Rather than mysteriously failing, raise exceptions
Merge pull request #12 from ltworf/unicode_sms

Convert unicode to actual unicode
Merge branch 'master' of https://github.com/karpitsky/libpynexmo into karpitsky-master
removed redundant link to docs
Fixed wrong encoding of text string instead of Unicode text string
Use detail parameter server instead of BASEURL

NexmoMessage accepts a "server" key in the details parameter, but was
using BASEURL through out anyway.

Use the "server" key from self.sms instead of BASEURL.