Specify NotAllowedError when permission is not granted

[LinusU]

This was previously only done for the read method, this patch adds it to readText, write and writeText as well.

Fixes #76

[LinusU]

Hmm, not sure why Travis is failing, but it doesn't seem related to the changes:

OSError: [Errno 2] No such file or directory: '/home/travis/build/w3c/clipboard-apis/bikeshed/bikeshed/spec-data/caniuse.json'

I have linked my GitHub account to my W3C account now, but I cannot retrigger the ipr check...

[garykac]

I just re-ran the IPR check and is rejects with "LinusU did not make IPR commitments for this group." I'm not sure how you need to go about doing that.

[LinusU]

Hmm, to be clear, I have no association with any company in the W3C group? Is that a prerequisite for making PRs to this repo? Could someone else make this change?

[LinusU]

ping @garykac @gked, any chance of moving forward on this?

[dontcallmedom]

Marked as non substantive for IPR from ash-nazg.

[LinusU]

ping @garykac @gked, any chance of moving forward on this?

[gked]

ping @garykac @gked, any chance of moving forward on this?

sorry, for delay on this. let me try to reproduce the issue and see what is happening.

[gked]

@LinusU hmm, travis built just fine when I integrated your changes in my own fork(see below).
@garykac if you don't mind, I'll accept the changes since I can attest to build passing.

[LinusU]

Thank you ❤️