Add a quick example

src/csv.coffee

@@ -23,15 +23,26 @@ available [here](https://github.com/wdavidw/node-csv-parser/tree/v0.1).
 Quick example
 -------------
 
-The following example illustrate 4 usages of the library:
+    // node samples/string.js
+    var csv = require('csv');
+    csv()
+    .from( '"1","2","3","4"\n"a","b","c","d"' )
+    .to( console.log )
+    // Output:
+    // 1,2,3,4
+    // a,b,c,d
+
+Advanced example
+----------------
+
+The following example illustrates 4 usages of the library:
 1.  Plug a readable stream by defining a file path
 2.  Direct output to a file path
 3.  Transform the data (optional)
 4.  Listen to events (optional)
     
     // node samples/sample.js
     var csv = require('csv');
-
     csv()
     .from.stream(fs.createReadStream(__dirname+'/sample.in')
     .to.path(__dirname+'/sample.out')
@@ -48,8 +59,7 @@ The following example illustrate 4 usages of the library:
     .on('error', function(error){
       console.log(error.message);
     });
-
-    // Print sth like:
+    // Output:
     // #0 ["2000-01-01","20322051544","1979.0","8.8017226E7","ABC","45"]
     // #1 ["2050-11-27","28392898392","1974.0","8.8392926E7","DEF","23"]
     // Number of lines: 2