Better format of the help page
Better format of the help page

Currently the help page doesn't look good , when i run it it print the information like this 

```
[gpadmin@gpdbsne tmp]$ python aaa.sql -h

COMMAND NAME: gpcheckintegrity
*****************************************************
SYNOPSIS
*****************************************************
gpcheckintegrity [-v | --verbose] [-s | --schema <schema_name> ] -d | --database <database>
gpcheckintegrity -h | -? | --help
*****************************************************
DESCRIPTION
*****************************************************
Utility for Greenplum Database that performs a table integrity exam to verify that all the
tables in a specific database can be queried.
***********************************
OPTIONS
***********************************
-v | --verbose
    Enables extra debug output. Only useful for debugging the tool itself.
-s | --schema <schema_name>
    Schema name to fetch the tables from. If this option is set, gpcheckintegrity
    will limit the integrity check to the tables located in this schema
-d | --database <database>
    Name of the database to check. This option is mandatory
-h | -? | --help
    Prints this help page
*****************************************************
EXAMPLES
*****************************************************
Check the integrity of all the tables in the database 'sales':
gpcheckintegrity -d sales
Check the integrity of all the tables in 'division_1' from DB 'sales':
gpcheckintegrity -s division_1 -d sales
Display this message again:
gpcheckintegrity -h
*****************************************************
BUGS
*****************************************************
Please report any bugs in https://github.com/ielizaga/gpcheckintegrity

[gpadmin@gpdbsne tmp]$ 
```

Place a pull request to make the help page print like this 

```

[gpadmin@gpdbsne gpcheckintegrity]$ python code.py  -h

Usage: python gpcheckintegrity 

*****************************************************
SYNOPSIS
*****************************************************

code.py -v [--verbose] -s [--schema] <schema_name> -d [--database] <database-name> 
code.py -h [-?] [--help] 

***************************************************** 
DESCRIPTION 
***************************************************** 

Utility for Greenplum Database that performs a table integrity exam to verify that all the tables in a specific database can be queried. 

*********************************** 
OPTIONS 
*********************************** 

-v, --verbose 			    Enables extra debug output. Only useful for debugging the tool itself. 
-s, --schema <schema_name> 	    Schema name to fetch the tables from. If this option is set, gpcheckintegrity will limit the integrity check to the tables located in this schema 
-d, --database <database> 	    Name of the database to check. This option is mandatory 
-h, -?, --help 			    Prints this help page 

***************************************************** 
EXAMPLES 
***************************************************** 

Check the integrity of all the tables in the database 'sales': 

	 code.py -d sales 

Check the integrity of all the tables in 'division_1' from DB 'sales': 

	 code.py -s division_1 -d sales 

Display this message again: 

	 code.py -h 

***************************************************** 
BUGS 
***************************************************** 

Please report any bugs in https://github.com/ielizaga/gpcheckintegrity

[gpadmin@gpdbsne gpcheckintegrity]$ 
```
Zerpet/gpcheckintegrity,ielizaga/gpcheckintegrity