[DavertMik]

Replaced directory path for run command with config option

• codecept run . => codecept run .
• codecept run examples => codecept run --config examples

Changed config syntax for run-multiple command

  "multiple": {
    "default": {
      "grep": "signin",
      "browsers": ["chrome", { "browser": "firefox", "windowSize":"maximize"}]
    }
  },

• better output for child processes
• copy options to child processes
• added --all option to run all suites
• grep is optional param for suite config
• added tests