[Fix sorin-ionescu#118] Add documentation for syntax-highlighting

modules/syntax-highlighting/README.md

@@ -0,0 +1,50 @@
+Syntax Highlighting
+===================
+
+Integrates [zsh-syntax-highlighting][1] into Oh My Zsh.
+
+This module should be loaded *second to last*, where last is the *prompt*
+module, unless used in conjuncture with the *history-substring-search* module
+where it must be loaded **before** it.
+
+Contributors
+------------
+
+New features and bug fixes should be submitted to the
+[zsh-syntax-highlighting][1] project according to its rules and regulations.
+This module will be synchronized against it.
+
+Settings
+--------
+
+### Highlighting
+
+To enable highlighting for this module only, and the following line to *zshrc*:
+
+    zstyle ':omz:module:syntax-highlighting' color 'yes'
+
+### Highlighters
+
+Syntax highlighting is accomplished by pluggable [highlighters][2]. This module
+enables the *main*, *brackets*, and *cursor* highlighters by default.
+
+To enable all highlighters, add the following to *zshrc*:
+
+    zstyle ':omz:module:syntax-highlighting' highlighters \
+      'main' \
+      'brackets' \
+      'pattern' \
+      'cursor' \
+      'root'
+
+Authors
+-------
+
+*The authors of this module should be contacted via the [issue tracker][3].*
+
+  - [Sorin Ionescu](https://github.com/sorin-ionescu)
+
+[1]: https://github.com/zsh-users/zsh-syntax-highlighting
+[2]: https://github.com/zsh-users/zsh-syntax-highlighting/tree/master/highlighters
+[3]: https://github.com/sorin-ionescu/oh-my-zsh/issues
+