Adding more info and fixes to upgrading guide
Adding more info and fixes to upgrading guide

thinsoldier/guzzle,mikicaivosevic/guzzle,Tobion/guzzle,thinsoldier/guzzle,lahmizzar/guzzle,Briareos/guzzle,rajaehtesham/guzzle,EdgarPE/guzzle,jeskew/guzzle,stea4lth/guzzle,michabbb-backup/guzzle,stefanruijsenaars/guzzle,staylor/guzzle,guzzle/guzzle,Tobion/guzzle,dshafik/guzzle,wherefortravel/guzzle,ehough/guzzle,Tony133/guzzle,Naktibalda/guzzle,atrauzzi/guzzle,vrkansagara/guzzle,guzzle/guzzle,Brunty/guzzle,paveljanda/guzzle,cenxun/guzzle,staylor/guzzle,kkopachev/guzzle,justincy/guzzle,lahmizzar/guzzle,mikicaivosevic/guzzle,javierTerry/guzzle,EdgarPE/guzzle,nazo/guzzle,Briareos/guzzle,duyhuynhngoc/guzzle,mustafavelioglu/guzzle,Rinat-wc/guzzle,Naktibalda/guzzle,chengky/guzzle,mrm/guzzle,BostjanOb/guzzle,justincy/guzzle,hussainweb/guzzle,hussainweb/guzzle,dshafik/guzzle,videni/guzzle,chengky/guzzle,Brunty/guzzle,Rinat-wc/guzzle,nazo/guzzle,ehough/guzzle,checat/guzzle,javierTerry/guzzle,mortenhauberg/guzzle,stefanruijsenaars/guzzle,checat/guzzle,WebSeed/guzzle,rajaehtesham/guzzle,stea4lth/guzzle,sulfo/guzzle,grokify/guzzle,paveljanda/guzzle,michabbb-backup/guzzle,grokify/guzzle,jeskew/guzzle,cenxun/guzzle,wherefortravel/guzzle,mrm/guzzle,vrkansagara/guzzle,duyhuynhngoc/guzzle,phlogisticfugu/guzzle,atrauzzi/guzzle,mustafavelioglu/guzzle,Tony133/guzzle,sulfo/guzzle,WebSeed/guzzle,kkopachev/guzzle,mortenhauberg/guzzle,phlogisticfugu/guzzle,videni/guzzle,BostjanOb/guzzle