Add better exception message when calling Robolectric.bindShadowClass() with a shadow class lacking @Implements.
Add better exception message when calling Robolectric.bindShadowClass() with a shadow class lacking @Implements.

gb112211/robolectric,yuzhong-google/robolectric,rossimo/robolectric,amarts/robolectric,davidsun/robolectric,IllusionRom-deprecated/android_platform_external_robolectric,karlicoss/robolectric,yinquan529/platform-external-robolectric,mag/robolectric,yuzhong-google/robolectric,thiz11/platform_external_robolectric,rburgst/robolectric,fiower/robolectric,cc12703/robolectric,ecgreb/robolectric,tyronen/robolectric,thiz11/platform_external_robolectric,tec27/robolectric,svenji/robolectric,diegotori/robolectric,toluju/robolectric,daisy1754/robolectric,WonderCsabo/robolectric,BCGDV/robolectric,paulpv/robolectric,eric-kansas/robolectric,fiower/robolectric,yuzhong-google/robolectric,tmrudick/robolectric,amarts/robolectric,Omegaphora/external_robolectric,MIPS/external-robolectric,tyronen/robolectric,WonderCsabo/robolectric,karlicoss/robolectric,zbsz/robolectric,androidgilbert/robolectric,MIPS/external-robolectric,xin3liang/platform_external_robolectric,tyronen/robolectric,xin3liang/platform_external_robolectric,ChengCorp/robolectric,yinquan529/platform-external-robolectric,wyvx/robolectric,svenji/robolectric,plackemacher/robolectric,1zaman/robolectric,ocadotechnology/robolectric,kriegfrj/robolectric,gabrielduque/robolectric,kriegfrj/robolectric,amarts/robolectric,charlesmunger/robolectric,BCGDV/robolectric,rongou/robolectric,rburgst/robolectric,pivotal-oscar/robolectric,geekboxzone/lollipop_external_robolectric,gb112211/robolectric,hgl888/robolectric,davidsun/robolectric,palfrey/robolectric,cc12703/robolectric,BCGDV/robolectric,jingle1267/robolectric,rburgst/robolectric,geekboxzone/lollipop_external_robolectric,IllusionRom-deprecated/android_platform_external_robolectric,toluju/robolectric,diegotori/robolectric,tmrudick/robolectric,diegotori/robolectric,spotify/robolectric,gabrielduque/robolectric,ecgreb/robolectric,geekboxzone/mmallow_external_robolectric,jongerrish/robolectric,WonderCsabo/robolectric,wyvx/robolectric,ocadotechnology/robolectric,tjohn/robolectric,mag/robolectric,rossimo/robolectric,lexs/robolectric,jongerrish/robolectric,gruszczy/robolectric,karlicoss/robolectric,zhongyu05/robolectric,android-ia/platform_external_robolectric,charlesmunger/robolectric,gb112211/robolectric,androidgilbert/robolectric,cesar1000/robolectric,androidgilbert/robolectric,tuenti/robolectric,Omegaphora/external_robolectric,kriegfrj/robolectric,gruszczy/robolectric,eric-kansas/robolectric,gruszczy/robolectric,gabrielduque/robolectric,pivotal-oscar/robolectric,jingle1267/robolectric,Omegaphora/external_robolectric,rossimo/robolectric,eric-kansas/robolectric,hgl888/robolectric,spotify/robolectric,zbsz/robolectric,trevorrjohn/robolectric,hgl888/robolectric,geekboxzone/mmallow_external_robolectric,xin3liang/platform_external_robolectric,rongou/robolectric,BCGDV/robolectric,holmari/robolectric,paulpv/robolectric,zbsz/robolectric,ChameleonOS/android_external_robolectric,yxm4109/robolectric,tuenti/robolectric,erichaugh/robolectric,palfrey/robolectric,spotify/robolectric,cc12703/robolectric,tjohn/robolectric,tec27/robolectric,1zaman/robolectric,macklinu/robolectric,lexs/robolectric,androidgilbert/robolectric,daisy1754/robolectric,ocadotechnology/robolectric,paulpv/robolectric,plackemacher/robolectric,yinquan529/platform-external-robolectric,MIPS/external-robolectric,android-ia/platform_external_robolectric,tuenti/robolectric,ecgreb/robolectric,upsight/playhaven-robolectric,thiz11/platform_external_robolectric,cesar1000/robolectric,toluju/robolectric,jingle1267/robolectric,ChengCorp/robolectric,VikingDen/robolectric,daisy1754/robolectric,charlesmunger/robolectric,trevorrjohn/robolectric,VikingDen/robolectric,android-ia/platform_external_robolectric,VikingDen/robolectric,trevorrjohn/robolectric,android-ia/platform_external_robolectric,geekboxzone/lollipop_external_robolectric,tec27/robolectric,yxm4109/robolectric,erichaugh/robolectric,yinquan529/platform-external-robolectric,geekboxzone/mmallow_external_robolectric,1zaman/robolectric,holmari/robolectric,ChameleonOS/android_external_robolectric,zhongyu05/robolectric,tmrudick/robolectric,yxm4109/robolectric,ChameleonOS/android_external_robolectric,yxm4109/robolectric,mag/robolectric,palfrey/robolectric,rongou/robolectric,ChengCorp/robolectric,davidsun/robolectric,plackemacher/robolectric,geekboxzone/mmallow_external_robolectric,erichaugh/robolectric,lexs/robolectric,macklinu/robolectric,fiower/robolectric,wyvx/robolectric,geekboxzone/lollipop_external_robolectric,jongerrish/robolectric,zhongyu05/robolectric,pivotal-oscar/robolectric,jongerrish/robolectric,tjohn/robolectric,cesar1000/robolectric,Omegaphora/external_robolectric,macklinu/robolectric,svenji/robolectric,holmari/robolectric,IllusionRom-deprecated/android_platform_external_robolectric