remove bucket env var req. & stop deleting all buckets

fixes #270
fixes #271
fix BQ error + retry retry logic
make error throwing more concise.
Merge pull request #275 from stephenplusplus/spp--fix-storage-tests

remove bucket env var req. & stop deleting all buckets
Add BigQuery to list of services in README
storage: set metadata on Bucket after creation
Big Query --> BigQuery
Merge pull request #277 from stephenplusplus/spp--storage-set-metadata

storage: set metadata on Bucket after creation
docs: fix links. fixes #279
Merge pull request #280 from stephenplusplus/spp--docs-link-fix

docs: fix links. fixes #279
docs: fix more links
readme: drive home the "service account" part.
Merge pull request #281 from stephenplusplus/spp--docs-link-fix

docs: fix more links
storage: use util.makeWritableStream