Add support for TX51
Mark transactions invalid if they have invalid fields or incorrect/nonparsable fields
Rename tx-hash to prop_id, renumber starting propID for TMSC ecosystem,
append currency ID to transaction data
Merge pull request #18 from faizkhan00/msc_parsing_and_balances

Add support for TX51
inital balances for sends
Add link to ReadTheDocs
clarify logic for extracting property IDs and lookups
Merge pull request #21 from faizkhan00/msc_parsing_and_balances

inital balances for sends
Merge branch 'master' of github.com:mastercoin-MSC/mastercoin-tools into msc_sp_scripts
Add proper force to TX51
Add support for TX53