2.0.1

Fix bad reference that was causing module to always use npm

2.0.0

New interface for 2.0.0

• exposed spawn and spawn.sync capabilities via cross-spawn
• added cache mechanism with a clearCache method
• added hasNpm and hasYarn boolean methods
• yarnOrNpm now returns a string of either npm or yarn

1.0.1

Swap execSync for spawnSync

1.0.0

Initial release with CLI and module support