Added generated rule for Zephir language

lib/linguist/generated.rb

@@ -63,7 +63,8 @@ module Linguist
         generated_jni_header? ||
         composer_lock? ||
         node_modules? ||
-        vcr_cassette?
+        vcr_cassette? ||
+        generated_by_zephir?
     end
 
     # Internal: Is the blob an XCode project file?
@@ -237,6 +238,13 @@ module Linguist
       !!name.match(/composer.lock/)
     end
 
+    # Internal: Is the blob a generated by Zephir
+    #
+    # Returns true or false.
+    def generated_by_zephir?
+      !!name.match(/.\.zep\.(?:c|h|php)$/)
+    end
+
     # Is the blob a VCR Cassette file?
     #
     # Returns true or false