Add sample output

Fixes #8

README.md

@@ -1,4 +1,4 @@
-A command line tool that generates markdown documentation for Postgres tables in a given schema
+A command line tool that generates Markdown documentation for Postgres tables in a given schema.
 
 ## Installation
 ```
@@ -28,6 +28,21 @@ postgres://username:password@host:port/dbname
 ```
 
 
+## Sample Output
+
+The generated Markdown details the column name, type, and default value for each table defined in your schema. It also displays nicely in GitHub (see more [here](./SAMPLE_TABLES.md)).
+
+### app_users 
+
+Column | Type | Default | Nullable 
+--- | --- | --- | --- 
+id | integer | nextval('app_users_id_seq'::regclass) | NO 
+email | character varying | None | NO 
+password | character varying | None | YES 
+is_active | boolean | true | YES 
+is_admin | boolean | false | YES 
+
+
 ## Run tests with Docker Compose
 ```
 docker-compose run cli nosetests -v

SAMPLE_TABLES.md

@@ -0,0 +1,40 @@
+### app_email_change_request 
+
+Column | Type | Default | Nullable 
+--- | --- | --- | --- 
+id | integer | nextval('app_email_change_request_id_seq'::regclass) | NO 
+user_id | integer | None | YES 
+new_email | character varying | None | NO 
+code | character varying | None | NO 
+expires | timestamp without time zone | (timezone('utc'::text, now()) + '1 day'::interval) | YES 
+
+### app_password_reset 
+
+Column | Type | Default | Nullable 
+--- | --- | --- | --- 
+id | integer | nextval('app_password_reset_id_seq'::regclass) | NO 
+user_id | integer | None | YES 
+code | character varying | None | NO 
+expires | timestamp without time zone | (timezone('utc'::text, now()) + '1 day'::interval) | YES 
+code_used | boolean | false | YES 
+
+### app_push_tokens 
+
+Column | Type | Default | Nullable 
+--- | --- | --- | --- 
+id | integer | nextval('app_push_tokens_id_seq'::regclass) | NO 
+user_id | integer | None | YES 
+token | character varying | None | NO 
+type | character varying | None | NO 
+sns_arn | character varying | None | NO 
+created | timestamp without time zone | timezone('utc'::text, now()) | YES 
+
+### app_users 
+
+Column | Type | Default | Nullable 
+--- | --- | --- | --- 
+id | integer | nextval('app_users_id_seq'::regclass) | NO 
+email | character varying | None | NO 
+password | character varying | None | YES 
+is_active | boolean | true | YES 
+is_admin | boolean | false | YES