Fixed typos, reworded some sentence.
Fixed typos, reworded some sentence.

aerogear/aerogear-unifiedpush-server,secondsun/aerogear-unifiedpush-server,secondsun/aerogear-unifiedpush-server,secondsun/aerogear-unifiedpush-server,aerogear/aerogear-unifiedpush-server,aerogear/aerogear-unifiedpush-server