fix: Remove fs.writeSync as default adapter and add TeamCity setup do…

[kevcenteno]

…cumentation

Closes #38

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[kevcenteno]

I signed it!

[googlebot]

CLAs look good, thanks!

[kevcenteno]

Unrelated build failure: Failure due to npm no longer supporting node v0.10. Maybe the CI build should remove this test.

[kevcenteno]

Might also fix #25

[kevcenteno]

@dignifiedquire Any thoughts on this?

[dizel3d]

@kevcenteno, it works, thank you!

Generally, the PR just reverted the fix https://github.com/karma-runner/karma-teamcity-reporter/commit/d8d9e70630031de66036d81b396561fb6de20f70, which isn't actual anymore. (https://github.com/karma-runner/karma-teamcity-reporter/issues/32#issuecomment-197908787 explains why.) So I look forward to merging.

@dignifiedquire, ping.

[dizel3d]

@kevcenteno, rebase your PR to actual master, please, to fix Travis CI build.

[kevcenteno]

Rebased

[kevcenteno]

@dignifiedquire @dizel3d Tests are passing and ready for merge

[dignifiedquire]

Thank you :octocat: