Update CurlFactory.php
Update CurlFactory.php

The `_body_as_string` option is used in `applyBody` which is called from `applyMethod`, therefore the option needs to be processed and made available _before_ `applyMethod` is called.
hussainweb/guzzle,kkopachev/guzzle,jeskew/guzzle,ehough/guzzle,Brunty/guzzle,hussainweb/guzzle,Naktibalda/guzzle,atrauzzi/guzzle,chengky/guzzle,staylor/guzzle,michabbb-backup/guzzle,mikicaivosevic/guzzle,mrm/guzzle,stefanruijsenaars/guzzle,michabbb-backup/guzzle,thinsoldier/guzzle,sulfo/guzzle,grokify/guzzle,javierTerry/guzzle,kkopachev/guzzle,Tony133/guzzle,mikicaivosevic/guzzle,stefanruijsenaars/guzzle,wherefortravel/guzzle,cenxun/guzzle,mustafavelioglu/guzzle,stea4lth/guzzle,mrm/guzzle,nazo/guzzle,EdgarPE/guzzle,BostjanOb/guzzle,paveljanda/guzzle,mortenhauberg/guzzle,stea4lth/guzzle,atrauzzi/guzzle,guzzle/guzzle,dshafik/guzzle,javierTerry/guzzle,Tobion/guzzle,ehough/guzzle,Brunty/guzzle,jeskew/guzzle,Tony133/guzzle,lahmizzar/guzzle,wherefortravel/guzzle,guzzle/guzzle,mustafavelioglu/guzzle,BostjanOb/guzzle,grokify/guzzle,cenxun/guzzle,lahmizzar/guzzle,rajaehtesham/guzzle,paveljanda/guzzle,EdgarPE/guzzle,Tobion/guzzle,videni/guzzle,nazo/guzzle,videni/guzzle,dshafik/guzzle,duyhuynhngoc/guzzle,Naktibalda/guzzle,rajaehtesham/guzzle,vrkansagara/guzzle,chengky/guzzle,mortenhauberg/guzzle,duyhuynhngoc/guzzle,thinsoldier/guzzle,sulfo/guzzle,vrkansagara/guzzle,staylor/guzzle