1st implementation
Remove duplicated closing
Add color for example
Add some methods
Refactor example
Fix typo
Fix to use isset()
Remove garbage
Remove unused argument
Replace $_ENV with NULL by default
Replace getcwd() with NULL by default
Add Stream class for STDOUT/STDERR
Set access level
Fix method declaration
Fix coding style
Fix coding style
Fix coding style
Fix method declaration
Add test for React\ChildProcess\Factory
Add more tests for React\ChildProcess\Factory->spawn()