added -n switch to disable the capturing of error screenshots as suggested by @bricas. Fixes #15

Author: John Doherty

README.MD

@@ -50,6 +50,7 @@ node ./node_modules/selenium-cucumber-js/index.js -s ./step-definitions
 -t, --tags <tagName>         name of tag to run
 -f, --featureFile <path>     a specific feature file to run
 -x, --timeOut <n>            steps definition timeout in milliseconds. defaults to 10 seconds
+-n, --noScreenshot           disable auto capturing of screenshots when an error is encountered
 ```
 
 By default tests are run using Google Chrome, to run tests using another browser supply the name of that browser along with the `-b` switch. Available options are:

features/google-search.feature

@@ -6,7 +6,7 @@ Feature: Searching for vote cards app
 
   Scenario: Google search for vote cards app
     When I search Google for "itunes vote cards app"
-    Then I should see some results
+    Then I should see "Vote Cards" in the results
 
   Scenario: Google search for course of life app
     When I search Google for "CourseOf.Life"

index.js

@@ -23,6 +23,7 @@ program
   .option('-t, --tags <tagName>', 'name of tag to run')
   .option('-f, --featureFile <path>', 'a specific feature file to run')
   .option('-x, --timeOut <n>', 'steps definition timeout in milliseconds. defaults to 10 seconds', parseInt)
+  .option('-n, --noScreenshot [optional]', 'disable auto capturing of screenshots when an error is encountered')
   .parse(process.argv);
 
 program.on('--help', function() {
@@ -41,6 +42,9 @@ global.reportsPath = path.resolve(program.reports);
 // used within world.js to decide if reports should be generated
 global.disableLaunchReport = (program.disableLaunchReport);
 
+// used with world.js to determine if a screenshot should be captured on error
+global.noScreenshot = (program.noScreenshot);
+
 // used within world.js to output junit reports
 global.junitPath = path.resolve(program.junit || program.reports);