Update Guava's README.md to add release info.
Update Guava's README.md to add release info.

This includes info on the latest release version as well as on snapshot versions, with links to Javadoc and JDiff for both.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=98328630

GitHub4Lgfei/guava,SaintBacchus/guava,Ariloum/guava,1yvT0s/guava,Akshay77/guava,anigeorge/guava,BollyCheng/guava,EdwardLee03/guava,5A68656E67/guava,mohanaraosv/guava,dushmis/guava,jayhetee/guava,Kevin2030/guava,montycheese/guava,ningg/guava,seanli310/guava,elijah513/guava,berndhopp/guava,mosoft521/guava,leogong/guava,easyfmxu/guava,ignaciotcrespo/guava,kaoudis/guava,levenhdu/guava,HarveyTvT/guava,yigubigu/guava,fengshao0907/guava,codershamo/guava,juneJuly/guava,ChengLong/guava,huangsihuan/guava,rcpoison/guava,liyazhou/guava,jsnchen/guava,gmaes/guava,SyllaJay/guava,juneJuly/guava,yanyongshan/guava,ChengLong/guava,mway08/guava,codershamo/guava,mohanaraosv/guava,jakubmalek/guava,abel-von/guava,VikingDen/guava,anigeorge/guava,hannespernpeintner/guava,lisb/guava,jiteshmohan/guava,norru/guava,liyazhou/guava,SyllaJay/guava,mgalushka/guava,monokurobo/guava,r4-keisuke/guava,Kevin2030/guava,dpursehouse/guava,AnselQiao/guava,yanyongshan/guava,pwz3n0/guava,mway08/guava,eidehua/guava,sebadiaz/guava,berndhopp/guava,weihungliu/guava,fengshao0907/guava,mosoft521/guava,aiyanbo/guava,RoliMG/guava,witekcc/guava,mgalushka/guava,weihungliu/guava,licheng-xd/guava,manolama/guava,mosoft521/guava,Yijtx/guava,scr/guava,google/guava,Xaerxess/guava,kaoudis/guava,yuan232007/guava,gmaes/guava,marstianna/guava,thinker-fang/guava,witekcc/guava,allenprogram/guava,tunzao/guava,VikingDen/guava,lgscofield/guava,eidehua/guava,leesir/guava,flowbywind/guava,Yijtx/guava,jankill/guava,DucQuang1/guava,pwz3n0/guava,qingsong-xu/guava,Akshay77/guava,lijunhuayc/guava,GabrielNicolasAvellaneda/guava,rob3ns/guava,DucQuang1/guava,m3n78am/guava,tli2/guava,typetools/guava,paplorinc/guava,0359xiaodong/guava,tunzao/guava,jayhetee/guava,njucslqq/guava,GitHub4Lgfei/guava,DavesMan/guava,monokurobo/guava,tobecrazy/guava,leogong/guava,5A68656E67/guava,norru/guava,marstianna/guava,levenhdu/guava,allenprogram/guava,disc99/guava,yuan232007/guava,HarveyTvT/guava,seanli310/guava,lgscofield/guava,tli2/guava,dpursehouse/guava,hannespernpeintner/guava,taoguan/guava,kingland/guava,SaintBacchus/guava,lisb/guava,1yvT0s/guava,EdwardLee03/guava,kingland/guava,GabrielNicolasAvellaneda/guava,ignaciotcrespo/guava,google/guava,elijah513/guava,rgoldberg/guava,lijunhuayc/guava,qingsong-xu/guava,m3n78am/guava,paplorinc/guava,scr/guava,licheng-xd/guava,ningg/guava,manolama/guava,taoguan/guava,0359xiaodong/guava,BollyCheng/guava,renchunxiao/guava,dushmis/guava,flowbywind/guava,aditya-chaturvedi/guava,DavesMan/guava,AnselQiao/guava,jackyglony/guava,jedyang/guava,disc99/guava,typetools/guava,thinker-fang/guava,jackyglony/guava,rob3ns/guava,huangsihuan/guava,easyfmxu/guava,yigubigu/guava,xasx/guava,Ariloum/guava,aditya-chaturvedi/guava,jedyang/guava,aiyanbo/guava,njucslqq/guava,montycheese/guava,jiteshmohan/guava,jakubmalek/guava,r4-keisuke/guava,tobecrazy/guava,RoliMG/guava,rcpoison/guava,renchunxiao/guava,google/guava,abel-von/guava,sebadiaz/guava,rgoldberg/guava,jsnchen/guava,jankill/guava,xasx/guava,Xaerxess/guava,leesir/guava