Add alfred-pwgen to Users section (#154)

Author: olssonm

readme.md

@@ -639,6 +639,7 @@ Non-synced local preferences are stored within `Alfred.alfredpreferences` under
 - [alfred-amphetamine](https://github.com/demartini/alfred-amphetamine) - Start and end sessions quickly in the Amphetamine app
 - [alfred-ids](https://github.com/rizowski/alfred-ids) - Generate various types of IDs.
 - [alfred-awesome-stars](https://github.com/jopemachine/alfred-awesome-stars) - Search starred GitHub repos through awesome-stars.
+- [alfred-pwgen](https://github.com/olssonm/alfred-password-generator) - Generate random and secure passwords.
 
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