Updated readme

README.md

@@ -1 +1,47 @@
-# esprima-python
+[![PyPI version](https://img.shields.io/pypi/v/esprima.svg)](https://pypi.python.org/pypi/esprima)
+[![PyPI downloads](https://img.shields.io/pypi/dm/esprima.svg)](https://pypi.python.org/pypi/esprima)
+
+**Esprima** ([esprima.org](http://esprima.org), BSD license) is a high performance,
+standard-compliant [ECMAScript](http://www.ecma-international.org/publications/standards/Ecma-262.htm)
+parser officially written in ECMAScript (also popularly known as
+[JavaScript](https://en.wikipedia.org/wiki/JavaScript)) and ported to Python.
+Esprima is created and maintained by [Ariya Hidayat](https://twitter.com/ariyahidayat),
+with the help of [many contributors](https://github.com/jquery/esprima/contributors).
+
+Python port is a line-by-line manual translation and was created and is maintained by [German Mendez Bravo (Kronuz)](https://twitter.com/germbravo).
+
+### Features
+
+- Full support for ECMAScript 2017 ([ECMA-262 8th Edition](http://www.ecma-international.org/publications/standards/Ecma-262.htm))
+- Sensible [syntax tree format](https://github.com/estree/estree/blob/master/es5.md) as standardized by [ESTree project](https://github.com/estree/estree)
+- Experimental support for [JSX](https://facebook.github.io/jsx/), a syntax extension for [React](https://facebook.github.io/react/)
+- Optional tracking of syntax node location (index-based and line-column)
+- [Heavily tested](http://esprima.org/test/ci.html) (~1500 [unit tests](https://github.com/jquery/esprima/tree/master/test/fixtures) with [full code coverage](https://codecov.io/github/jquery/esprima))
+
+### Installation
+
+```shell
+pip install esprima
+```
+
+### API
+
+Esprima can be used to perform [lexical analysis](https://en.wikipedia.org/wiki/Lexical_analysis) (tokenization) or [syntactic analysis](https://en.wikipedia.org/wiki/Parsing) (parsing) of a JavaScript program.
+
+A simple example:
+
+```python
+>>> import esprima
+>>> program = 'const answer = 42'
+
+>>> esprima.tokenize(program)
+[{ type: "Keyword", value: "const" },
+ { type: "Identifier", value: "answer" },
+ { type: "Punctuator", value: "=" },
+ { type: "Numeric", value: "42" }]
+
+>>> esprima.parseScript(program)
+{ body: [{ kind: "const", declarations: [{ init: { raw: "42", type: "Literal", value: 42 }, type: "VariableDeclarator", id: { type: "Identifier", name: "answer" } }], type: "VariableDeclaration" }], type: "Program", sourceType: "script" }
+```
+
+For more information, please read the [complete documentation](http://esprima.org/doc).