Drop the 'node-' prefix from the repo name

The generated parser can be used from any language

README.md

@@ -1,6 +1,6 @@
-node-tree-sitter-c
+tree-sitter-c
 ==================
 
-[![Build Status](https://travis-ci.org/maxbrunsfeld/node-tree-sitter-c.svg?branch=master)](https://travis-ci.org/maxbrunsfeld/node-tree-sitter-c)
+[![Build Status](https://travis-ci.org/maxbrunsfeld/tree-sitter-c.svg?branch=master)](https://travis-ci.org/maxbrunsfeld/tree-sitter-c)
 
-C grammar for [node-tree-sitter](https://github.com/maxbrunsfeld/node-tree-sitter). Adapted from [this C99 grammar](http://slps.github.io/zoo/c/iso-9899-tc3.html#designation).
+C grammar for [tree-sitter](https://github.com/maxbrunsfeld/tree-sitter). Adapted from [this C99 grammar](http://slps.github.io/zoo/c/iso-9899-tc3.html#designation).