Throw ConfigurationError on problems with loading config
Throw ConfigurationError on problems with loading config

Try to improve error handling. #172

gregelin/mkdocs,jpush/mkdocs,jimporter/mkdocs,tedmiston/mkdocs,xeechou/mkblogs,samhatfield/mkdocs,cazzerson/mkdocs,jimporter/mkdocs,samuelcolvin/mkdocs,ericholscher/mkdocs,waylan/mkdocs,jpush/mkdocs,lukfor/mkdocs,longjl/mkdocs,pjbull/mkdocs,waylan/mkdocs,lbenet/mkdocs,williamjmorenor/mkdocs,jpush/mkdocs,nicoddemus/mkdocs,samhatfield/mkdocs,hhg2288/mkdocs,vi4m/mkdocs,dmehra/mkdocs,lukfor/mkdocs,wenqiuhua/mkdocs,simonfork/mkdocs,fujita-shintaro/mkdocs,wenqiuhua/mkdocs,xeechou/mkblogs,longjl/mkdocs,jeoygin/mkdocs,kubikusrubikus/mkdocs,ericholscher/mkdocs,mkdocs/mkdocs,mlzummo/mkdocs,justinkinney/mkdocs,jeoygin/mkdocs,pjbull/mkdocs,cazzerson/mkdocs,rickpeters/mkdocs,kubikusrubikus/mkdocs,xeechou/mkblogs,cazzerson/mkdocs,waylan/mkdocs,peter1000/mkdocs,williamjmorenor/mkdocs,mlzummo/mkdocs,nicoddemus/mkdocs,michaelmcandrew/mkdocs,mkdocs/mkdocs,jamesbeebop/mkdocs,jimporter/mkdocs,davidgillies/mkdocs,lbenet/mkdocs,justinkinney/mkdocs,d0ugal/mkdocs,jamesbeebop/mkdocs,pjbull/mkdocs,vi4m/mkdocs,dmehra/mkdocs,williamjmorenor/mkdocs,cnbin/mkdocs,rickpeters/mkdocs,michaelmcandrew/mkdocs,peter1000/mkdocs,vi4m/mkdocs,lbenet/mkdocs,simonfork/mkdocs,samuelcolvin/mkdocs,d0ugal/mkdocs,michaelmcandrew/mkdocs,samhatfield/mkdocs,cnbin/mkdocs,xeechou/mkblogs,ramramps/mkdocs,tedmiston/mkdocs,longjl/mkdocs,hhg2288/mkdocs,fujita-shintaro/mkdocs,nicoddemus/mkdocs,cnbin/mkdocs,dmehra/mkdocs,gregelin/mkdocs,mlzummo/mkdocs,davidgillies/mkdocs,cazzerson/mkdocs,lukfor/mkdocs,jpush/mkdocs,ramramps/mkdocs,hhg2288/mkdocs,peter1000/mkdocs,jeoygin/mkdocs,wenqiuhua/mkdocs,rickpeters/mkdocs,davidgillies/mkdocs,fujita-shintaro/mkdocs,jamesbeebop/mkdocs,kubikusrubikus/mkdocs,mkdocs/mkdocs,justinkinney/mkdocs,simonfork/mkdocs,wenqiuhua/mkdocs,ramramps/mkdocs,gregelin/mkdocs,samuelcolvin/mkdocs,d0ugal/mkdocs,ericholscher/mkdocs,tedmiston/mkdocs