Release v2.6.0

[watilde]

Proposal to bump the feature version.

Feature updates:

• Add --poll option: Add --poll option #39
• Add --log option: Add log option #22
• Allow running without plugins: Allow running without plugins #38
• Support es6/babel default export: support es6/babel default export #37

Fix updates:

• Update some of the dependencies: Update the version of dependencies #28

[RyanZim]

@watilde Shouldn't b92ac78 be squashed into 5138efc?

[watilde]

@RyanZim You are right! I will squash the commits into one commit. Thanks :)

[watilde]

npm test worked fine! Ship it.