Updates to README
Updates to README

Remove zizaco's third party status links
Give proper attribution to the original developers
Remove discussion of the static rules array, as it's no longer relevant

emunshi/entrust,buiphu/entrust,proshore/entrust-lumen,leon19910505/entrusts,leon19910505/entrusts,shraddhabanerjee/entrust,Zizaco/entrust,dezon/entrust,Zizaco/entrust,FireEngineRed/entrust,vigneshpalanivel/entrust,choeng/entrust,bramburn/entrust,moura137/entrust,Stichoza/entrust,moura137/entrust,philip8728/entrust,danielgelling/entrust,jarbitlira/entrust,Jacq/entrust,akshayagarwal/entrust,peshkov3/entrust,AndresRojasIsaza/entrust,vigneshpalanivel/entrust,proshore/entrust-lumen,rhwilrForks/entrust,acabin/entrust,pathirana/entrust,bbatsche/entrust,yaoshanliang/entrust,yaoshanliang/entrust,taohaoge/entrust