Added documentation for nested <reporter> element.
Added documentation for nested <reporter> element.

jerome-jacob/testng,scr/testng,JeshRJ/myRepRJ,tobecrazy/testng,tremes/testng,bmlct/testng,smaudet/testng,tobecrazy/testng,cbeust/testng,msebire/testng,jerome-jacob/testng,cbeust/testng,aledsage/testng,6ft-invsbl-rbbt/testng,6ft-invsbl-rbbt/testng,tremes/testng,raindev/testng,rschmitt/testng,AJ-72/testng,s2oBCN/testng,emopers/testng,aledsage/testng,meeroslaph/testng,smaudet/testng,jerome-jacob/testng,VikingDen/testng,msebire/testng,missedone/testng,s2oBCN/testng,jaypal/testng,rschmitt/testng,gjuillot/testng,krmahadevan/testng,smaudet/testng,msebire/testng,raindev/testng,smaudet/testng,meeroslaph/testng,missedone/testng,VikingDen/testng,bmlct/testng,cbeust/testng,JeshRJ/myRepRJ,scr/testng,scr/testng,scr/testng,JeshRJ/myRepRJ,smaudet/testng,jerome-jacob/testng,AJ-72/testng,akozlova/testng,emopers/testng,VikingDen/testng,missedone/testng,rschmitt/testng,juherr/testng,meeroslaph/testng,VladRassokhin/testng,emopers/testng,juherr/testng,6ft-invsbl-rbbt/testng,VikingDen/testng,raindev/testng,gjuillot/testng,VladRassokhin/testng,akozlova/testng,meeroslaph/testng,AJ-72/testng,krmahadevan/testng,scr/testng,s2oBCN/testng,cbeust/testng,bmlct/testng,rschmitt/testng,missedone/testng,jaypal/testng,6ft-invsbl-rbbt/testng,rschmitt/testng,JeshRJ/myRepRJ,tobecrazy/testng,msebire/testng,emopers/testng,tremes/testng,tremes/testng,raindev/testng,juherr/testng,tobecrazy/testng,gjuillot/testng,AJ-72/testng,meeroslaph/testng,emopers/testng,VladRassokhin/testng,VladRassokhin/testng,krmahadevan/testng,juherr/testng,missedone/testng,gjuillot/testng,tremes/testng,jaypal/testng,krmahadevan/testng,VladRassokhin/testng,s2oBCN/testng,AJ-72/testng,VladRassokhin/testng,akozlova/testng,raindev/testng,juherr/testng,aledsage/testng,jaypal/testng,s2oBCN/testng,bmlct/testng,aledsage/testng,VikingDen/testng,JeshRJ/myRepRJ,6ft-invsbl-rbbt/testng,krmahadevan/testng,raindev/testng,aledsage/testng,cbeust/testng,AJ-72/testng,tobecrazy/testng,jaypal/testng,jerome-jacob/testng,akozlova/testng,msebire/testng,akozlova/testng,gjuillot/testng,aledsage/testng,bmlct/testng