test for encoding length
export encodingLength
document encodingLength
Merge pull request #6 from dominictarr/master

support for numbers up to 9 QUADRILLION!
Merge pull request #7 from dominictarr/encoding-length

Encoding length
1.2.0
test that invalid varints throw
check whether we read past the end of the buffer
Merge branch 'master' of git://github.com/chrisdickinson/varint