treat pound and star as valid digits

lib/adhearsion/voip/asterisk/commands.rb

@@ -891,7 +891,7 @@ def from_pbx
 
           def validate_digits(digits)
             returning digits.to_s do |digits_as_string|
-              raise ArgumentError, "Can only be called with valid digits!" unless digits_as_string =~ /^\d+$/
+              raise ArgumentError, "Can only be called with valid digits!" unless digits_as_string =~ /^[0-9*#]+$/
             end
           end
 

spec/voip/asterisk/test_commands.rb

@@ -1149,6 +1149,12 @@
     pbx_was_asked_to_execute "saydigits", digits
   end
 
+  test 'Digits that include pound and star are considered valid' do
+    digits = "1#2*3#4*5"
+    mock_call.should_receive(:execute).once.with("saydigits", digits)
+    mock_call.say_digits digits
+  end
+
   test 'Cannot pass non-integers into say_digits.  Will raise an ArgumentError' do
     the_following_code {
       mock_call.say_digits 'abc'