Migrate to MIT license

Adapted to the MIT license migration of the main "Nord" (1) project.
Detailed information can be found in the main task ticket.

All license SVG badges and the "LICENSE.md" content have been updated.
In addition all source code comment header have also been simplified.

References:

* (1) https://github.com/arcticicestudio/nord

Subtask of nordtheme/nord#55
nordthemeGH-19

README.md

@@ -119,6 +119,6 @@ Please report issues/bugs, feature requests and suggestions for improvements to
 
 <p align="center"><img src="https://cdn.rawgit.com/arcticicestudio/nord/develop/src/assets/banner-footer-mountains.svg" /></p>
 
-<p align="center"> <img src="http://arcticicestudio.com/favicon.ico" width=16 height=16/> Copyright &copy; 2017 Arctic Ice Studio</p>
+<p align="center">Copyright &copy; 2017-present Arctic Ice Studio</p>
 
-<p align="center"><a href="http://www.apache.org/licenses/LICENSE-2.0"><img src="https://img.shields.io/badge/License-Apache_2.0-5E81AC.svg?style=flat-square"/></a> <a href="https://creativecommons.org/licenses/by-sa/4.0"><img src="https://img.shields.io/badge/License-CC_BY--SA_4.0-5E81AC.svg?style=flat-square"/></a></p>
+<p align="center"><a href="https://github.com/arcticicestudio/nord-tmux/blob/develop/LICENSE.md"><img src="https://img.shields.io/badge/License-MIT-5E81AC.svg?style=flat-square"/></a> <a href="https://creativecommons.org/licenses/by-sa/4.0"><img src="https://img.shields.io/badge/License-CC_BY--SA_4.0-5E81AC.svg?style=flat-square"/></a></p>

nord.tmux

@@ -1,18 +1,13 @@
 #!/usr/bin/env bash
-# +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-# title      Nord tmux TPM Loader                         +
-# project    nord-tmux                                    +
-# repository https://github.com/arcticicestudio/nord-tmux +
-# author     Arctic Ice Studio                            +
-# email      [email protected]              +
-# copyright  Copyright (C) 2017                           +
-# +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-#
-# [References]
-# Nord
-#   https://github.com/arcticicestudio/nord
-# tmux
+# Copyright (c) 2017-present Arctic Ice Studio <[email protected]>
+# Copyright (c) 2017-present Sven Greb <[email protected]>
+
+# Project:    Nord tmux
+# Repository: https://github.com/arcticicestudio/nord-tmux
+# License:    MIT
+# References:
 #   https://tmux.github.io
+
 NORD_TMUX_COLOR_THEME_FILE=src/nord.conf
 NORD_TMUX_VERSION=0.2.0
 NORD_TMUX_STATUS_CONTENT_FILE="src/nord-status-content.conf"

src/nord-status-content-no-patched-font.conf

@@ -1,11 +1,10 @@
-# +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-# title      Status Content - No Patched Font             +
-# project    nord-tmux                                    +
-# repository https://github.com/arcticicestudio/nord-tmux +
-# author     Arctic Ice Studio                            +
-# email      [email protected]              +
-# copyright  Copyright (C) 2017                           +
-# +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+# Copyright (c) 2017-present Arctic Ice Studio <[email protected]>
+# Copyright (c) 2017-present Sven Greb <[email protected]>
+
+# Project:    Nord tmux
+# Repository: https://github.com/arcticicestudio/nord-tmux
+# License:    MIT
+
 #+----------------+
 #+ Plugin Support +
 #+----------------+

src/nord-status-content.conf

@@ -1,11 +1,10 @@
-# +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-# title      Status Content                               +
-# project    nord-tmux                                    +
-# repository https://github.com/arcticicestudio/nord-tmux +
-# author     Arctic Ice Studio                            +
-# email      [email protected]              +
-# copyright  Copyright (C) 2017                           +
-# +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+# Copyright (c) 2017-present Arctic Ice Studio <[email protected]>
+# Copyright (c) 2017-present Sven Greb <[email protected]>
+
+# Project:    Nord tmux
+# Repository: https://github.com/arcticicestudio/nord-tmux
+# License:    MIT
+
 #+----------------+
 #+ Plugin Support +
 #+----------------+

src/nord.conf

@@ -1,12 +1,10 @@
-# +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-# title      Nord tmux                                    +
-# project    nord-tmux                                    +
-# version    0.2.0                                        +
-# repository https://github.com/arcticicestudio/nord-tmux +
-# author     Arctic Ice Studio                            +
-# email      [email protected]              +
-# copyright  Copyright (C) 2017                           +
-# +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+# Copyright (c) 2017-present Arctic Ice Studio <[email protected]>
+# Copyright (c) 2017-present Sven Greb <[email protected]>
+
+# Project:    Nord tmux
+# Repository: https://github.com/arcticicestudio/nord-tmux
+# License:    MIT
+
 #+----------------+
 #+ Plugin Support +
 #+----------------+