Reduces event log noise, adds support for ignorefiles, fixes asset uploads

Ignorefiles and file black lists

You can now add ignore patterns and ignore files to your configuration. The contents of the files will be read and any files that match those patterns will be ignored.

You can represent these changes by adding the following to your config.yml file:

ignores:
  - name_of_your_ignore_file (such as .gitignore)
ignore_files:
  - name_of_specific_file_to_ignore (such as config/settings_data.json)

For the time being an ignore file needs to include itself otherwise changes it will be detected and attempts to upload the file will occur.

Bugfixes:

• theme-manipulate upload now detects content type and uploads files appropriately. Images, PDFs and other binary data will be uploaded to Shopify appropriately now. See #11 for further details of the issue.