Fix github archive url

Author: HashNuke

bin/compile

@@ -25,7 +25,7 @@ fi
 erlang_tar="OTP_${erlang_version}.tgz"
 erlang_source_url="https://s3.amazonaws.com/heroku-buildpack-erlang/${erlang_tar}"
 elixir_tar="v${elixir_version}.tar.gz"
-elixir_source_url="https://github.com/elixir-lang/elixir/tarball/${elixir_tar}"
+elixir_source_url="https://github.com/elixir-lang/elixir/archive/${elixir_tar}"
 
 echo "Erlang version $erlang_version"
 echo "Elixir version $elixir_version"
@@ -65,22 +65,14 @@ PATH=${build_pack_dir}:$PATH
 
   cd ${cache_dir}
   echo "Fetching Elixir ${elixir_version} from ${elixir_source_url}"
-  # curl -LksO ${elixir_source_url} || exit 1
+  curl -LksO ${elixir_source_url} || exit 1
 )
-curl -LksO ${elixir_source_url}
-echo $?
 
 rm -rf ${elixir_root}
 echo "Extracting: ${cache_dir}/${elixir_tar}"
 tar zxf ${cache_dir}/${elixir_tar}
 mv "elixir-${elixir_version}" ${elixir_root}
 
-echo "Listing cache dir"
-ls $cache_dir
-
-echo "Listing elixir root"
-ls ${elixir_root}
-
 (
   set -e