updated readme with accurate docker instructions

.gemspec

@@ -4,7 +4,7 @@ Gem::Specification.new do |s|
   s.name        = 'yopass'
   s.version     = '2.2.0'
   s.author      = 'Johan Haals'
-  s.email       = ['[email protected]']
+  s.email       = '[email protected]'
   s.homepage    = 'https://github.com/jhaals/yopass'
   s.summary     = 'Secure sharing for secrets and passwords'
   s.description = 'Web service for sharing secrets more securely'

README.md

@@ -30,19 +30,18 @@ Most settings can be configured with environment variables.
 
 
 ### Run in docker container
-YoPass Docker container available [here](https://hub.docker.com/u/jhaals/yopass)
-
-make sure to change `YOPASS_BASE_URL`
 
+    docker pull jhaals/yopass
     docker run -e "RACK_ENV=production" -e "YOPASS_BASE_URL=http://192.168.59.105:4567" -p 4567:4567 -d jhaals/yopass
 
 ### SMS providers
 
-Lacking your SMS provider? Just fork the repo and submit a pull request.
-Use the bulksms provider in ```lib/sms_provider/bulksms.rb``` as example
+Supported SMS providers
 
-##### Supported Providers
-Bulksms
+- Bulksms
+
+Missing your favorite SMS provider? Just fork the repo and submit a pull request.
+Use the bulksms provider in ```lib/sms_provider/bulksms.rb``` as example
 
 ### Screenshot
 ![YoPass website](http://f.cl.ly/items/2F2T1L3a3R162K2G383q/yopass.png)