simple quotes, no escape for mysql inline password

I feel a bit funny coming up with that but that's the only way it works for me...

mysql client: `mysql  Ver 14.12 Distrib 5.0.95, for redhat-linux-gnu (x86_64) using readline 5.1`
mysql server: `5.6.10 Source distribution`

I made a couple of tests locally too:
```
mysql -h localhost -u root -ppassword       << WORKS
mysql -h localhost -u root -p'password'       << WORKS
mysql -h localhost -u root -p\"password\" << DOESN'T WORK
mysql -h localhost -u root -p\'password\' << DOESN'T WORK
```

so unless someone come out with a nice story, it seems that simple quotes would do !

thx for that gem ;)