added README file

README.md

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+# Templish
+
+A templating language for JavaScript, using JavaScript.
+
+## Installation
+
+Install with NPM:
+
+	npm install --save templish
+
+## Usage
+
+A simple example:
+
+``` JavaScript
+//First, require the library
+var Templish = require("templish");
+
+//Create a templish template
+var t = new Templish("<title>{{conf.title}}</title>", ["conf"]);
+
+//Create an environment
+var env = {
+	conf: {
+		title: "Hello, World!"
+	}
+}
+
+//Execute the template
+t.exec(env, function(err, res) {
+	console.log(res); //<title>Hello, World!</title>
+});
+
+//Execute the template again, this time with a different environment
+env = {
+	conf: {
+		title: "Good Morning, Earth!"
+	}
+}
+t.exec(env, function(err, res) {
+	console.log(res); //<title>Good Morning, Earth!</title>
+});
+```
+
+We can do more complex things, even with asynchronous functions:
+
+``` JavaScript
+var fs = require("fs");
+var Templish = require("templish");
+
+//Create a templish template
+var t = new Templish(
+	"<title>{{fs.readFile('someFile', 'UTF8', cb)}}</title>",
+	["fs"]
+);
+
+//Create an environment, this time with the `fs` method to let us access files
+var env = {
+	fs: fs
+}
+
+//Execute the template
+t.exec(env, function(err, res) {
+	console.log(res); //If we assume the `someFile` file contains "hi, world":
+	                  //<title>hi, world</title>
+});
+```
+
+We can have multiple statements:
+
+``` JavaScript
+var Templish = require("templish");
+
+//Create a templish template
+var t = new Templish("\
+	<title>{{ \
+		var str = 'Hello World'; \
+		return str; \
+	}}</title>",
+	[]
+);
+
+//Execute the template
+t.exec({}, function(err, res) {
+	console.log(res) //<title>Hello World</title>
+});
+```
+
+Notice that with multiple statements, you have to include the `return` statement yourself.
+
+Of course, in practice, you would probably want your templates to be individual files, and not inline in the script file, not that Templish cares, as long as it receives a string.