Interest (doc): In wireDecode, note that input can be a Blob.
declare function-scoped var to avoid global leak

in TlvDecoder.prototype.readEntendedVarNumber.

By not declaring 'result' and simply assigning it a value, we leak it to the global scope. detected by mocha testing dependent code in the browser.
Merge pull request #32 from rynomad/patch-1

declare function-scoped var to avoid global leak
Merge branch 'master' into feross to get the pull request for TlvDecoder.readExtendedVarNumber