Update README with comparison with pip freeze

README.rst

@@ -1,14 +1,59 @@
 pipdeptree
 ==========
 
-A command line utility to show the installed packages as a dependency
-tree.
+`pipdeptree` is a command line utility to show the installed python
+packages as a dependency tree. It works pretty much like `pip
+freeze`. Since `pip freeze` shows all dependencies as a flat list,
+finding out which are the top level packages and which packages do
+they depend on requires some effort. This utility tries to solve this
+problem.
+
+To give you a brief idea here is the output of `pipdeptree` compared
+to `pip freeze`
+
+.. source-code:: bash
+
+    $ pip freeze
+    Flask==0.10.1
+    Flask-Script==0.6.6
+    Jinja2==2.7.2
+    Mako==0.9.1
+    MarkupSafe==0.18
+    SQLAlchemy==0.9.1
+    Werkzeug==0.9.4
+    alembic==0.6.2
+    argparse==1.2.1
+    itsdangerous==0.23
+    psycopg2==2.5.2
+    redis==2.9.1
+    slugify==0.0.1
+    wsgiref==0.1.2
+
+.. source-code:: bash
+
+    $ python pipdeptree.py
+    wsgiref==0.1.2
+    argparse==1.2.1
+    psycopg2==2.5.2
+    flask-script==0.6.6
+      - flask [installed: 0.10.1]
+        - werkzeug [required: >=0.7, installed: 0.9.4]
+        - jinja2 [required: >=2.4, installed: 2.7.2]
+          - markupsafe [installed: 0.18]
+        - itsdangerous [required: >=0.21, installed: 0.23]
+    alembic==0.6.2
+      - sqlalchemy [required: >=0.7.3, installed: 0.9.1]
+      - mako [installed: 0.9.1]
+        - markupsafe [required: >=0.9.2, installed: 0.18]
+    slugify==0.0.1
+    redis==2.9.1
 
 
 Installation
 ------------
 
-:todo
+This library is still being worked upon and hence, yet to be published
+on pypi
 
 
 Usage
@@ -21,7 +66,3 @@ License
 -------
 
 MIT
-
-
-
-