Fix link to open issues in README
Fix link to open issues in README

usm4n/cyclejs,usm4n/cyclejs,staltz/cycle,feliciousx-open-source/cyclejs,cyclejs/cycle-core,usm4n/cyclejs,cyclejs/cyclejs,maskinoshita/cyclejs,ntilwalli/cyclejs,maskinoshita/cyclejs,staltz/cycle,ntilwalli/cyclejs,feliciousx-open-source/cyclejs,maskinoshita/cyclejs,usm4n/cyclejs,feliciousx-open-source/cyclejs,maskinoshita/cyclejs,cyclejs/cyclejs,ntilwalli/cyclejs,feliciousx-open-source/cyclejs,cyclejs/cyclejs,ntilwalli/cyclejs,cyclejs/cycle-core,cyclejs/cyclejs