Added simple true=true assertion to testBeginTransaction()
Added simple true=true assertion to testBeginTransaction()

Only this assertion is needed as we are only testing whether the query did not fail (which would result in an exception, failing the test)

daniel-gomes-sociomantic/phinx,gerkirill/phinx,berarma/phinx,jimdoescode/phinx,vitormattos/phinx,courtney-miles/phinx,rquadling/phinx,castamir/phinx,kamioftea/phinx,dankempster/phinx,dancryer/phinx,ikagawa/phinx,Thamrongsak/phinx,angelorighi/phinx,stevemarksmonii/phinx,k10r/phinx,BambooHR/phinx-mt,aCodify/phinx,PinZhang/phinx,laurin1/phinx,lornajane/phinx,aCodify/phinx,igormx/phinx,lzpfmh/phinx,HavokInspiration/phinx,robmorgan/phinx,curtisgibby/phinx,DeltaPHP/phinx