Run prerelease script on travis

Author: José Valim

.travis.yml

@@ -19,6 +19,7 @@ script:
   - mix deps.get
   - mix test
   - mix coveralls.travis
+  - bash test/prerelease.sh
   - yarn
   - yarn run lint
   - yarn run test

test/prerelease.sh

@@ -4,8 +4,10 @@ PKG=test/tmp/package
 # build package
 mix hex.build
 
+TAR=$(ls ex_doc-*.tar | head -n 1)
+
 # extract package
-rm -rf $PKG && mkdir -p $PKG/contents && tar xf ex_doc-*.tar -C $PKG && tar xzf $PKG/contents.tar.gz -C $PKG/contents
+rm -rf $PKG && mkdir -p $PKG/contents && tar xf $TAR -C $PKG && tar xzf $PKG/contents.tar.gz -C $PKG/contents
 
 # compile and build docs
 cd $PKG/contents && MIX_ENV=prod mix do deps.get --only prod, compile, docs