Added examples to readme

README.md

@@ -4,10 +4,14 @@ GSON is an easy-to-use JSON library for
 [Guile](https://www.gnu.org/software/guile/ "GNU/Guile Homepage").
 
 ## Getting Started
+
+Let's get started with a very simple example. This example does not
+perform exception handling.
 ```scheme
-(use-modules (gson)
-             (ice-9 format))
+;;; Import gson
+(use-modules (gson))
 
+;;; Define variable code which stores a JSON string
 (define code
   "
 {
@@ -23,10 +27,22 @@ GSON is an easy-to-use JSON library for
     ]
 }")
 
+;;; Print the scheme representation of above JSON
 (display(json-string->scm code))
 (newline)
 ```
 
+#### Output
+
+```
+((name . John Doe)
+ (age . 43)
+ (address
+   (street . 10 Downing Street)
+   (city . London))
+ (phones . #(+44 1234567 +44 2345678)))
+```
+
 ## Installation
 
 before installing, make sure you have Guile and make installed.
@@ -39,3 +55,12 @@ Once you've installed make, run the following command to install gson.
 ```bash
 sudo make install
 ```
+
+## Documentation
+GSON module exports size functions in total. The definition and usage
+examples of each of the functions is given below.
+
+```scheme
+procedure json-string->scm (string #:key number-hook nil-hook
+    list-hook object-hook string-hook boolean-hook)
+```