Use path.join() to make filepath

[t-ide]

Types of changes

I fixed #27

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Proposed changes

Use path.join() to make file path instead of str + str + ...

Checklist

• I have read the contribution guidelines
• For non-bugfix PRs, I have discussed this change on the mailing list/slack team.
• I have run grunt to verify the unit tests pass
• I have added suitable unit tests to cover the new/changed functionality

[coveralls]

Coverage increased (+0.08%) to 76.898% when pulling c3c32e4 on t-ide:master into c2c18f5 on node-red:master.

[coveralls]

Coverage increased (+0.08%) to 76.898% when pulling c3c32e4 on t-ide:master into c2c18f5 on node-red:master.

[coveralls]

Coverage increased (+0.08%) to 76.898% when pulling c3c32e4 on t-ide:master into c2c18f5 on node-red:master.