chore: update readme and license

Author: aminya

LICENSE.md

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2015 Dan Printzell
+Copyright (c) 2021 atom-ide-d maintainers
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -1,12 +1,43 @@
-# ide-d
+# ide-D
 
-Adds D language support for Atom
+D ide for Atom
 
-# License
+## Features
+
+The features are provided by `serve-d`, `dcd`, `dscanner`, etc.
+
+- Syntax highlightning for D, DML, SDL, and Diet
+- Autocompletion
+- Datatips
+- Linting
+- Outline
+- Hyperclick
+- ...
+
+## Installation
+
+Install from: https://atom.io/packages/ide-d
+
+or
+
+```
+apm install ide-d
+```
+
+### Screenshots
+
+![datatips](https://user-images.githubusercontent.com/16418197/108882251-ce014c80-75c9-11eb-9655-79552b910b12.png)
+![autocomplete](https://user-images.githubusercontent.com/16418197/108882313-df4a5900-75c9-11eb-8d0a-c73ef8898a72.png)
+![outline](https://user-images.githubusercontent.com/16418197/106541516-cf0df500-64c7-11eb-9f85-c6145fac1be0.png)
+![linter](https://user-images.githubusercontent.com/16418197/106541705-15fbea80-64c8-11eb-8120-3361207ed30d.png)
+
+## License
 
 MIT - Look in [LICENSE.md](LICENSE.md) for more information
 
-# Authors
+## Authors
+
+- Amin Yahyaabadi
 
-- Dan "Wild" Printzell
-- "WebFreak001"
+* Dan "Wild" Printzell
+* "WebFreak001"