Add vim messages to cucumber test failure errors

Author: joonty

features/step_definitions/debugger_command_steps.rb

@@ -1,9 +1,9 @@
 When "I step over" do
   vdebug.step_over
-  vdebug.running?.should be(true), 'Vdebug is not running'
+  vdebug.running?.should be(true), "Vdebug is not running: #{vdebug.messages}"
 end
 
 When "I step in" do
   vdebug.step_in
-  vdebug.running?.should be(true), 'Vdebug is not running'
+  vdebug.running?.should be(true), "Vdebug is not running: #{vdebug.messages}"
 end

features/step_definitions/evaluate_steps.rb

@@ -1,4 +1,4 @@
 When "I evaluate $expression" do |expr|
   vdebug.evaluate expr
-  vdebug.running?.should be(true), 'Vdebug is not running'
+  vdebug.running?.should be(true), "Vdebug is not running: #{vdebug.messages}"
 end

features/step_definitions/php_steps.rb

@@ -2,5 +2,5 @@
   vdebug.start_listening
   full_script_path = Dir.getwd + "/" + script
   run_php_script full_script_path
-  vdebug.running?.should be(true), 'Vdebug is not running'
+  vdebug.running?.should be(true), "Vdebug is not running: #{vdebug.messages}"
 end