readme: update paths to config files

options.js and credentials.js moved. Update Readme to reflect new paths
to both files.

Closes #668

Author: laurelnaiad

README-JavaScript.md

@@ -160,7 +160,7 @@ Samplestack is configured to either run Selenium locally or to access SauceLabs.
 `gulp e2e` is the command that is used to execute end-to-end tests.  There are several flags which control how the tests are executed.
 
 * `--browser=[ie | ff | chrome | phantomjs]`: e.g. `browser=ie`. Used to specify a browser to launch **locally** along with an automatically launched local Selenium server. You must have Java installed to run Selenium. The default value is `chrome`.
-* `--sauce[={platorm-key} | =all | =supported(s)]`: specifies a specifc platform or set of platforms on which to execute tests remotely using SauceLabs. To run these tests, you must supply credentials. See `browser/credentials.js` for information on configuring Sauce credentials. The list of browser/operating system combinations that will be run if you specify "all" or "supported" is listed in `browser/options.js`. Any of the browsers configured to be runnable in that file may also be specified individually by key, e.g. `--sauce=win7-ie-10`. If both the `--browser` and `--sauce` flags are set, the task will fail. If `--sauce` is specified with no platform, then it is equivalent to `--sauce=supported`.
+* `--sauce[={platorm-key} | =all | =supported(s)]`: specifies a specifc platform or set of platforms on which to execute tests remotely using SauceLabs. To run these tests, you must supply credentials. See `shared/credentials.js` for information on configuring Sauce credentials. The list of browser/operating system combinations that will be run if you specify "all" or "supported" is listed in `share/js/options.js`. Any of the browsers configured to be runnable in that file may also be specified individually by key, e.g. `--sauce=win7-ie-10`. If both the `--browser` and `--sauce` flags are set, the task will fail. If `--sauce` is specified with no platform, then it is equivalent to `--sauce=supported`.
 * `--middle-tier=[java | external]`. If `java` is specified, then the middle tier automation code will be controlled by the task, such that a clean install of the Java middle-tier and database configuration will be performed and the middle tier will be started.  On the contrary, if `external` is specified, then the task will assume that a middle tier server and database have already been configured and launched and are listening on port 8090. The default is for this flag to be unset (the e2e tests to use the Node.js middle-tier). *Please see [Browser Development with Java](./browser/README.md#Browser-Development-With-Java) for information.*
 * `--tags="<comma-separated-tags>"`. Each tags is of the form `@tagname`. These are
 tags present in the feature files. If specified, only features/scenarios which match this