Release v2.5.0

• Solves issue #13: all the child_process.exec function invocations have been replaced with the appropriate child_process.spawn to avoid using buffers.
• JSDoc documentation improved

Release v2.4.0

• Fixed the issue that was causing asynchronous functions to run synchronously. Issue #14

Release v2.3.0

• Error-handling mechanism
• Code improvement (linting)