Use cliframework v1.5.* as 1.6 doesn't seem to work

With cliframework I run into the following error:

```
PHP Notice:  Trying to get property of non-object in /Users/chadrien/projects/chadrien/phpbrew/vendor/corneltek/cliframework/src/CLIFramework/Command/HelpCommand.php on line 97

Notice: Trying to get property of non-object in /Users/chadrien/projects/chadrien/phpbrew/vendor/corneltek/cliframework/src/CLIFramework/Command/HelpCommand.php on line 97
PHP Warning:  Invalid argument supplied for foreach() in /Users/chadrien/projects/chadrien/phpbrew/vendor/corneltek/cliframework/src/CLIFramework/Command/HelpCommand.php on line 97

Warning: Invalid argument supplied for foreach() in /Users/chadrien/projects/chadrien/phpbrew/vendor/corneltek/cliframework/src/CLIFramework/Command/HelpCommand.php on line 97
```