Fix #205 (erlydtl:compile/3 returns warnings)
Fix #205 (erlydtl:compile/3 returns warnings)

Adapt rebar_erlydtl_compiler to handle warnings emitted by
erlydtl:compile/3.

K2InformaticsGmbH/rebar,rebar/rebar3,fabiankrol/rebar3,scatterbrain/rebar,lrascao/rebar,SiDen/rebar,RubberCthulhu/rebar,K2InformaticsGmbH/rebar,saleyn/rebar3,linearregression/rebar3,paulo-ferraz-oliveira/rebar,dcarastan/rebar,processone/rebar3,norton/rebar3,beni55/rebar,bsmr-erlang/rebar,platinumthinker/rebar,rebar/rebar,rebar/rebar,fauxsoup/rebar3,paulo-ferraz-oliveira/rebar,GabrielNicolasAvellaneda/rebar,fishcakez/rebar3,GabrielNicolasAvellaneda/rebar,zugolosian/rebar3,project-fifo/rebar3,CMoH/rebar,lrascao/rebar3,CMoH/rebar,processone/rebar3,surik/rebar3,apache/couchdb-rebar,K2InformaticsGmbH/rebar,jacktang/rebar,GabrielNicolasAvellaneda/rebar,jacktang/rebar,ferd/rebar3,evnix/rebar,vladdu/rebar3,fabiankrol/rebar3,blt/rebar3,benoitc/rebar3,walrusVision/rebar3,matwey/rebar,jacktang/rebar,K2InformaticsGmbH/rebar,project-fifo/rebar3,lpgauth/rebar,norton/rebar,tsloughter/rebar3,matwey/rebar,cloudant/couchdb-rebar,djnym/rebar3,lpgauth/rebar,K2InformaticsGmbH/rebar,evnix/rebar,bsmr-erlang/rebar,SiDen/rebar,syl20bnr/rebar,csyangchen/rebar,RubberCthulhu/rebar,walrusVision/rebar3,CMoH/rebar,benoitc/rebar3,bsmr-erlang/rebar,matwey/rebar,lrascao/rebar,evnix/rebar,sile/rebar3,oubiwann/rebar,dcarastan/rebar,csyangchen/rebar,sile/rebar3,matwey/rebar,lrascao/rebar,lrascao/rebar,lpgauth/rebar,apache/couchdb-rebar,shkumagai/rebar,choptastic/rebar,paulo-ferraz-oliveira/rebar,dcarastan/rebar,shkumagai/rebar,oubiwann/rebar,macintux/rebar,SiDen/rebar,cloudant/couchdb-rebar,choptastic/rebar,zugolosian/rebar3,blt/rebar3,csyangchen/rebar,choptastic/rebar,bsmr-erlang/rebar,jbalint/rebar3,norton/rebar,syl20bnr/rebar,shkumagai/rebar,fauxsoup/rebar3,rebar/rebar3,jbalint/rebar3,scatterbrain/rebar,scatterbrain/rebar,syl20bnr/rebar,surik/rebar3,platinumthinker/rebar,lrascao/rebar,erlang/rebar3,matwey/rebar,beni55/rebar,oubiwann/rebar,linearregression/rebar3,norton/rebar,cloudant/couchdb-rebar,rebar/rebar,heroku/rebar,norton/rebar,heroku/rebar,kellymclaughlin/rebar3,platinumthinker/rebar,apache/couchdb-rebar,macintux/rebar,beni55/rebar,macintux/rebar