Detection of unicode characters in the `text` by trying to decode.
Updated version.
Convert unicode paramets to utf-8.
Rather than mysteriously failing, raise exceptions

Possibly with appropriately human readable message,
to let people know what is going on.
Convert unicode to actual unicode

This patch allows to send unicode texts, for real.
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.
pep8 compliance
fix doc: raising exception instead of returning false