Add support for exporting specific tables
Dynamically build mysqldump command rather than repeating it
Add example for exporting specific tables
Merge pull request #1038 from CodeAwhile/db-export-tables

Add support for exporting specific tables
Whitelisted underscore in synopsis values.
Merge pull request #1039 from Rarst/synopsis-whitelist-underscore

Whitelisted underscore in synopsis values.