Added a short introduction to the README
Added a short introduction to the README

openspending/openspendingjs-old,openspending/openspendingjs,openspending/openspendingjs-old,openspending/openspendingjs-old,RCGTDev/openspendingjs,openspending/openspendingjs,openspending/openspendingjs,openspending/openspendingjs-old,RCGTDev/openspendingjs,RCGTDev/openspendingjs,openspending/openspendingjs,RCGTDev/openspendingjs