getstorybook spelling issue on error

[Sawtaytoes]

When you get the error An error occured while installing dependencies.`, this error has a few issues.

1. occured should be spelled occurred.
2. There's a random grave accent at the end before the period.
3. The ✓ and ✖ icons are showing up as boxes in windows using cmd and git bash.

[arunoda]

Thanks for the bug report.
I fixed the typos and did a new release.

For windows, I assume it's related to unicode support.
So, I created an issue related to this here: storybook-eol/getstorybook#22