Update readme (#273)

Author: Feichtmeier

.github/images/appearance_panel.png

@@ -2,9 +2,7 @@
 
 The goal of this project is to build a feature complete settings app for the Ubuntu desktop with the Flutter UI toolkit.
 
-![](.github/images/appearance_panel.png)
-![](.github/images/multitasking_page.png)
-![](.github/images/power_panel.png)
+![](.github/images/settings.png)
 
 Mentionable packages that we use and want to thank are:
 
@@ -23,7 +21,7 @@ Mentionable packages that we use and want to thank are:
 
 # Alpha Releases / Download
 
-Currently the app is in a very raw alpha state and many pages are still missing.
+Currently the app is in a very raw alpha state and pages are still missing.
 However if you want you can download, extract and then run alpha releases [from the releases page](https://github.com/Feichtmeier/settings/releases).
 
 # Building
@@ -65,7 +63,7 @@ sudo apt install libhandy-1-dev
 
 - [X] use real yaru icons - thanks to @Jupi007
 - [X] responsive layout
-- [X] [MVVM software architecture](https://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93viewmodel) - thanks to @jpnurmi
+- [X] [MVVM software pattern](https://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93viewmodel) - thanks to @jpnurmi
 - [X] search
 - [X] WIFI page - WIP
 - [ ] Ethernet page
@@ -85,7 +83,7 @@ sudo apt install libhandy-1-dev
 - [X] Mouse and touchpad page
 - [X] Keyboard shortcuts page - WIP
 - [ ] Printers page - WIP
-- [X] Removeable Media page    
+- [X] Removable Media page    
 - [ ] Color page
 - [ ] Region and language page
 - [X] Accessability page