folds support and somewhat better indents for ruby

queries/ruby/folds.scm

@@ -0,0 +1,12 @@
+[
+  (method)
+  (singleton_method)
+  (class)
+  (module)
+  (if)
+  (else)
+  (case)
+  (do_block)
+  (singleton_class)
+  (lambda)
+] @fold

queries/ruby/indents.scm

@@ -1,12 +1,26 @@
 [
   (class)
   (method)
+  (singleton_method)
   (module)
   (call)
   (if)
+  (block)
+  (do_block)
+  (hash)
+  (array)
+  (argument_list)
+  (case)
 ] @indent
 
 [
+  "("
+  ")"
+  "{"
+  "}"
+  "["
+  "]"
+  (when)
   (elsif)
   "end"
 ] @branch