Added README

README.md

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+Highlight
+=========
+
+[VERSION: 0.1]
+
+Builds a custom registry for manipulating highlights. In particular, I found it
+necessary to search for different keywords without overriding previous searches;
+that is, I wanted to be able to continue adding more words to a search without
+having to keep track of which words I've already searched for.
+
+Functionality includes:
+
+* ```["x]&```: Add the <cword> under the cursor into highlight registry ```x```.
+* ```["x]d&```: Remove <cword> under the cursor from highlight registry ```x```.
+* ```["x]c&```: Clear all words from highlight registry ```x```.
+
+Additionally, overrides the following:
+
+* ```["x]*```: Searches for the next <cword> and appends word into registry ```x```.
+* ```["x]#```: Searches for the previous <cword> and appends word into registry ```x```.
+
+Variables
+---------
+
+Refers to the color used for highlighting when a registry had not been initialized.
+
+```
+g:highlight_register_default_color = 'Yellow'
+```