Merge pull request #85 from faizkhan00/update-readme

Add docs for getactivedexoffers_MP
Detect whether incoming fundraiser is right unit type and convert appropriately
Merge pull request #86 from faizkhan00/sp-coin-detection

fundraiser unit detection
minor test code
Merge branch 'michael-0921' of https://github.com/mastercoin-msc/mastercore into michael-0921
More instructions on -txindex and -reindex