Add readme

Author: NikolayFrantsev

.gitignore

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+/node_modules/
+/package-lock.json
+/yarn.lock

README.md

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+# TCStringParse
+
+Simple parser for transparency and consent strings compatible with TCF2.0.
+
+## Installation
+
+`npm install tc-string-parse`
+
+## Usage
+
+### NodeJS
+
+```js
+const TCStringParse = require('tc-string-parse');
+
+const consentString = ''; // your consent string
+TCStringParse(consentString);
+```
+
+### Browser
+
+```html
+<script src="path/to/tc-string-parse.js"></script>
+
+<script>
+  const consentString = ''; // your consent string
+  TCStringParse(consentString);
+</script>
+```