Added little qualifier to the Note Bene.

Edited kbucket to make "key_in_range" docs show what is being
returned.

Fixed kbucket typo.
Tried to make things more concistant (capitals, and
k/v => key/value)
Update validators.py

id -> ID
Changed wording slightly to make clearer.

Removed some speicis from a paragraph that were not relevant to
this function. Copy and paste mistake?

Also you seem prefer using this 'x' field format of talking about
the different fields. Changed to be consistent.
Update utils.py

id => ID
Update crypto.py

Updated with Terry Jones suggestion.
Update kbucket.py

Typo corrected
Update messages.py

Updated with suggestion from Terry Jones
Update messages.py

Typo corrected
Update messages.py

Updated with Terry Jones suggestion.
Merge pull request #11 from ciaranmooney/docs_proofread_1

First quick docs proofread - iss #10