[Bug] Wont compile in the last version

[vinkla]

I'm running the latest version (0.2.11) and it wont compile the HTML for me. If I downgrade to version 0.2.10 it works. I've submitted my error message below:

posthtml -o output.html -i input.html

(node:8401) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 2): TypeError: Cannot convert undefined or null to object
(node:8401) DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

I'm running the latest version of Node.js and npm on macOS Sierra.

[Scrum]

@vinkla Hi, thanks i know and create PR

[Scrum]

@vinkla Hi, now you can update to 0.2.12

[vinkla]

Thanks!