feature/process-single-event

Pull request recommendations:

[x] Name your pull request your-development-type/short-description. Ex: feature/read-tiff-files
[x] Link to any relevant issue in the PR description. Ex: Resolves [gh-12], adds tiff file format support Resolves #89
[x] Provide context of changes.
[x] Provide relevant tests for your feature or bug fix. Ran manual test of script on single events for Seattle Channel.
[x] Provide or update documentation for any feature added by your pull request.
Created a new process_single_event script for any events that were not successfully processed for some reason or want to be reprocessed
Script is generalized: can simply swap out the event scraper of choice
Added an abstract get_single_event method for all event scrapers to have
Created new scraping method for single seattle channel events where the content is in the main div
Example command: process_single_event --event_url http://www.seattlechannel.org/mayor-and-council/city-council/2018/2019-civic-development-public-assets-and-native-communities-committee/?videoid=x101695 --config_path cdptools/configs/seattle-event-gather-pipeline.json --debug Thanks for contributing!

CouncilDataProject / cdptools_v2