Error message should include full path to log file

[rwjblue]

Currently, when an error occurs we give general info in the console and suggest folks to look in the generated log file for more details. Overall, this is really awesome, unfortunately the message only includes the name of the file created and does not give enough info to find the file.

❯ ember s -p 0
Notion error: Could not read package info for dependencies.

Please ensure that all dependencies have been installed.
Error details written to: notion-error-2019-04-29_11_02_40.413.log

Where is notion-error-2019-04-29_11_02_40.413.log?!?

I'd suggest we update the message to something akin to:

Notion error: Could not read package info for dependencies.

Please ensure that all dependencies have been installed.
Error details written to: ~/.notion/log/notion-error-2019-04-29_11_02_40.413.log

This makes it clear where the file is, and even makes the path "clickable" in some terminals (e.g. iTerm2).

P.S - The error messages are significantly better in 0.3.0, thanks to everyone who has worked on them!