Cleanup: build procedure
Cleanup: build procedure

Rake::ExtensionTask already covered compilation process (rake compile).

simplegeo/sqlite3-ruby,duhlin/sqlite3-ruby,schuyler/sqlite3-ruby,simplegeo/sqlite3-ruby,alexdowad/sqlite3-ruby,AutogrowSystems/sqlite3-ruby,yoshimoto/sqlite3-ruby,schuyler/sqlite3-ruby,schuyler/sqlite3-ruby,duhlin/sqlite3-ruby,yoshimoto/sqlite3-ruby,alexdowad/sqlite3-ruby,AutogrowSystems/sqlite3-ruby