adds initial salesforce strategy template and adds salesforce initializer lines
fixes typos
adds salesforce require line to external submodule
modifies salesforce submodule to use the correct user_info_url
updates salesforce comments
modifies get_user_hash to grab the correct uid
add specs for Salesforce provider
Merge pull request #652 from supremebeing7/salesforce_support

Salesforce support
update changelog
add @arnvald contact info to readme
Allow oauth 1.x

Closes #657