Catch error raised by Textblob.sentences

Occurs when sentences have multiple ending punctuation marks with
whitespace between. See #40
Word.lemma passes POS tag to WordNextLemmatizer
_wordnet should be lazy-loaded
Rename Word.lemma to Word.lemmatize()
Update doc: Word.lemma -> Word.Lemmatize()
Add myself to AUTHORS (pull request requirement)
FIX: new line added to the end of file
FIX: 4 spaces per indentation level
Keeping lemma property to maintain compatibility
FIX: sorry, a stupid mistake
Merge pull request #41 from RomanYankovsky/master

Word.lemma -> Word.lemmatize()
Update docs
Remove modifications to nltk sentence tokenizer

See #40
Py26-compatible test skipping
Duh
Word: using pos_tag in lemma property by default
Moving _penn_to_wordnet outside the Word class
Merge pull request #46 from RomanYankovsky/dev

Word: using pos_tag in lemma property by default
Merge branch 'dev' of https://github.com/sloria/TextBlob into dev
Bump version