Fix style in brew create-generated formulae

- Fix indentation oddities
- Add empty lines where we expect them in submitted formulae

Library/Homebrew/dev-cmd/create.rb

@@ -190,6 +190,7 @@ class FormulaCreator
       <% elsif  mode.nil? %>
         # depends_on "cmake" => :build
       <% end  %>
+
         def install
           # ENV.deparallelize  # if your formula fails when building in parallel
       <% if  mode == :cmake %>
@@ -219,6 +220,7 @@ class FormulaCreator
           system "make", "install" # if this fails, try separate make/make install steps
       <% end  %>
         end
+
         test do
           # `test do` will create, run in and delete a temporary directory.
           #