set pecl-ev branch to master

Author: steverhoades

travis-init.sh

@@ -21,7 +21,7 @@ if [ "$TRAVIS_PHP_VERSION" != "hhvm" ]; then
     echo "extension=libevent.so" >> "$(php -r 'echo php_ini_loaded_file();')"
 
     # install 'pecl-ev' PHP extension
-    git clone -b tsrm http://bitbucket.org/osmanov/pecl-ev.git
+    git clone http://bitbucket.org/osmanov/pecl-ev.git
     # 0.2.10
     pushd pecl-ev
     phpize