README.md in sigh-0.2.0 vs README.md in sigh-0.2.1

@@ -119,18 +119,19 @@
 In case you prefer environment variables:
 
 - ```SIGH_USERNAME```
 - ```SIGH_APP_IDENTIFIER```
 - ```SIGH_TEAM_ID``` (The Team ID, e.g. `Q2CBPK58CA`)
+- `SIGH_DISABLE_OPEN_ERROR` - in case of error, `sigh` won't open Preview with a screenshot of the error when this variable is set.
 
 # How does it work?
 
 ```sigh``` will access the ```iOS Dev Center``` to download, renew or generate the ```.mobileprovision``` file. Check out the full source code: [developer_center.rb](https://github.com/KrauseFx/sigh/blob/master/lib/sigh/developer_center.rb).
 
 
 ## How is my password stored?
-```sigh``` uses the password manager from [```Deliver```](https://github.com/KrauseFx/deliver#can-i-trust-deliver). Take a look the [Deliver README](https://github.com/KrauseFx/deliver#can-i-trust-deliver) for more information.
+```sigh``` uses the [password manager](https://github.com/KrauseFx/CredentialsManager) from `fastlane`. Take a look the [CredentialsManager README](https://github.com/KrauseFx/CredentialsManager) for more information.
 
 # Tips
 ## [`fastlane`](http://fastlane.tools) Toolchain
 
 - [`fastlane`](http://fastlane.tools): Connect all deployment tools into one streamlined workflow
@@ -145,10 +146,10 @@
 It will show you the ```mobileprovision``` files like this: 
 ![assets/QuickLookScreenshot.png](assets/QuickLookScreenshot.png)
 
 
 # Need help?
-- If there is a technical problem with ```sigh```, submit an issue. Run ```sigh --trace``` to get the stacktrace.
+- If there is a technical problem with ```sigh```, submit an issue.
 - I'm available for contract work - drop me an email: [e-mail]
 
 # License
 This project is licensed under the terms of the MIT license. See the LICENSE file.