Add flattr button
Add flattr button

Syntax from https://gist.github.com/snipe/4963631

zellerdev/jabref,tobiasdiez/jabref,mredaelli/jabref,Braunch/jabref,tschechlovdev/jabref,shitikanth/jabref,Mr-DLib/jabref,tobiasdiez/jabref,motokito/jabref,oscargus/jabref,shitikanth/jabref,sauliusg/jabref,oscargus/jabref,jhshinn/jabref,grimes2/jabref,Braunch/jabref,mredaelli/jabref,shitikanth/jabref,oscargus/jabref,Siedlerchr/jabref,mairdl/jabref,tschechlovdev/jabref,Siedlerchr/jabref,motokito/jabref,sauliusg/jabref,JabRef/jabref,jhshinn/jabref,obraliar/jabref,mairdl/jabref,JabRef/jabref,motokito/jabref,zellerdev/jabref,mairdl/jabref,jhshinn/jabref,grimes2/jabref,zellerdev/jabref,grimes2/jabref,jhshinn/jabref,tschechlovdev/jabref,Siedlerchr/jabref,mredaelli/jabref,jhshinn/jabref,ayanai1/jabref,oscargus/jabref,bartsch-dev/jabref,sauliusg/jabref,Mr-DLib/jabref,tobiasdiez/jabref,shitikanth/jabref,obraliar/jabref,tschechlovdev/jabref,tschechlovdev/jabref,ayanai1/jabref,ayanai1/jabref,zellerdev/jabref,motokito/jabref,JabRef/jabref,mairdl/jabref,JabRef/jabref,obraliar/jabref,Braunch/jabref,ayanai1/jabref,sauliusg/jabref,bartsch-dev/jabref,mairdl/jabref,bartsch-dev/jabref,shitikanth/jabref,mredaelli/jabref,ayanai1/jabref,bartsch-dev/jabref,grimes2/jabref,Braunch/jabref,zellerdev/jabref,Siedlerchr/jabref,mredaelli/jabref,Braunch/jabref,tobiasdiez/jabref,Mr-DLib/jabref,oscargus/jabref,grimes2/jabref,obraliar/jabref,Mr-DLib/jabref,bartsch-dev/jabref,obraliar/jabref,Mr-DLib/jabref,motokito/jabref