Include --version in completions

bin/rbenv-install

@@ -45,8 +45,9 @@ if [ "$1" = "--complete" ]; then
   echo --force
   echo --skip-existing
   echo --keep
-  echo --verbose
   echo --patch
+  echo --verbose
+  echo --version
   exec ruby-build --definitions
 fi
 

test/rbenv.bats

@@ -145,8 +145,9 @@ OUT
 --force
 --skip-existing
 --keep
---verbose
 --patch
+--verbose
+--version
 
 ${RBENV_ROOT}/plugins/bar/share/ruby-build
 ${RBENV_ROOT}/plugins/foo/share/ruby-build