Add short overview to README
Add short overview to README

valthebald/cibox,PavelLoparev/cibox,turcan-vasile/cibox,tkyryliuk/cibox,ey-/cibox,propeopleua/cibox,Sanchiz/cibox,propeoplemd/cibox,turcan-vasile/cibox,tkyryliuk/cibox,Sanchiz/cibox,Sanchiz/cibox,Sanchiz/cibox,PavelLoparev/cibox,dpovshed/cibox,PavelLoparev/cibox,valthebald/cibox,valthebald/cibox,loganyott/cibox,valthebald/cibox,ey-/cibox,tkyryliuk/cibox,propeopleua/cibox,loganyott/cibox,propeoplemd/cibox,valthebald/cibox,PavelLoparev/cibox,ygerasimov/cibox-1,turcan-vasile/cibox,ygerasimov/cibox-1,turcan-vasile/cibox,PavelLoparev/cibox,Sanchiz/cibox,tkyryliuk/cibox,tkyryliuk/cibox,turcan-vasile/cibox,tkyryliuk/cibox,ey-/cibox,propeopleua/cibox,ygerasimov/cibox-1,dpovshed/cibox,propeoplemd/cibox,loganyott/cibox,dpovshed/cibox,ey-/cibox,ey-/cibox,loganyott/cibox,dpovshed/cibox,propeopleua/cibox,loganyott/cibox,dpovshed/cibox,turcan-vasile/cibox,propeoplemd/cibox,loganyott/cibox,dpovshed/cibox,ygerasimov/cibox-1,ygerasimov/cibox-1,propeopleua/cibox,Sanchiz/cibox,propeoplemd/cibox,PavelLoparev/cibox