docs: Use SVG badges

Author: honzajavorek

README.md

@@ -1,9 +1,9 @@
 # http-string-parser
 
 [![NPM Version](https://img.shields.io/npm/v/http-string-parser.svg)](https://www.npmjs.com/package/http-string-parser)
-[![Build Status](https://travis-ci.org/apiaryio/http-string-parser.png)](https://travis-ci.org/apiaryio/http-string-parser)
-[![Dependency Status](https://david-dm.org/apiaryio/http-string-parser.png)](https://david-dm.org/apiaryio/http-string-parser)
-[![devDependency Status](https://david-dm.org/apiaryio/http-string-parser/dev-status.png)](https://david-dm.org/apiaryio/http-string-parser#info=devDependencies)
+[![Build Status](https://travis-ci.org/apiaryio/http-string-parser.svg)](https://travis-ci.org/apiaryio/http-string-parser)
+[![Dependency Status](https://david-dm.org/apiaryio/http-string-parser.svg)](https://david-dm.org/apiaryio/http-string-parser)
+[![devDependency Status](https://david-dm.org/apiaryio/http-string-parser/dev-status.svg)](https://david-dm.org/apiaryio/http-string-parser?type=dev)
 
 Parse HTTP messages (Request and Response) from raw string in Node.JS
 
@@ -35,7 +35,7 @@ See more about [Request][request] and [Response][response] data model.
 
 `parseHeaders(headersLinesArray)`
 
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 NOTE: Proof of concept, naive HTTP parsing, wheel re-inventation. In future it may be replaced with better parser from [Node.JS core's C bindings of NGINX HTTP parser](https://github.com/joyent/http-parser) or [PEG.js HTTP parser](https://npmjs.org/package/http-pegjs)