Adds RFC6979 test vectors and fixes ecdsa.sign/detGenK
Adds assertion messages
Removes applyMultisigs and adds setScriptSig
Removes type coercion for a stricter TX API
Removes convert module
Adds tests for TX.prototype.p2shsign
Renames p2shsign to signScriptSig
Adds assertions for types in signScriptSig
Renames createInputScript to createPubKeyHashScriptSig
Removes unused functions from convert
Merge pull request #151 from dcousens/rfc6979testvectors

RFC6979 Test Vectors
Merge pull request #152 from dcousens/p2shsign

Preliminary test for P2shsign
Merge pull request #154 from dcousens/convrem

Remove dead code from Convert module
Fixes signScriptSig test
Merge pull request #160 from bitcoinjs/signScriptSig-test

Fixes signScriptSig test