Add missing README link to Sonatype snapshot repo.
Add missing README link to Sonatype snapshot repo.

rharter/moshi,shyamkumarm/moshi,tsdl2013/moshi,Turbo87/moshi,serj-lotutovici/moshi,MaTriXy/moshi,vipulshah2010/moshi,shyamkumarm/moshi,square/moshi,Turbo87/moshi,bunnyblue/moshi,tsdl2013/moshi,mumer92/moshi,huihui4045/moshi,MaTriXy/moshi,vipulshah2010/moshi,square/moshi,bunnyblue/moshi,changjiashuai/moshi,dssljt/moshi,RyanTech/moshi,selmanon/moshi,rharter/moshi,selmanon/moshi,huihui4045/moshi,DavidMihola/moshi,DavidMihola/moshi,rharter/moshi,serj-lotutovici/moshi,serj-lotutovici/moshi,RyanTech/moshi,changjiashuai/moshi,vamsirajendra/moshi,dssljt/moshi,yangpeiyong/moshi,kidaa/moshi,mumer92/moshi,yangpeiyong/moshi,vamsirajendra/moshi,kidaa/moshi,square/moshi