Pulled commits from the develop branch to master.

I have merged the develop branch to the master branch of the Prosper-ai node repository. This merge was done to continue development of the Foss bot where it was left off at some 3 months ago.

Changes to files can be seen below in the image.

Further details of those changes are the following...
#94, fix array search for all white / black lists, now recognizes fir… …3228dcf
#75, improve BOT_API_KEY explanation and advise in installation docs 4e00b63
#51, improve Heroku credit / bank card sign up catch infor in install… …2019ccc
#42, add Heroku Scheduler best effort note to installation docs e30614c
#86, change Run Bot function to fork this process and run bot.js; upd… …5b07b03
#95, remove email from server, library and bot code; remove SendGrid … c6c7b63
#95, remove email from Edit Config 780c60e
#95, remove email info from docs and readme 02b1b71
#64, main work migrating from redis db to mongodb e66a041
#64, change Heroku app add ons (remove redis and sendgrid, add mongolab) 528fcf8
#95, remove Heroku config vars for email from app config list a5de165
#64, add better error checking for config vars update 41e9160
#64, small error checking changes to edit algo set and fetch 0831e92
#64, fix getting general key object from mongo dba36d935
#64, actually fix getting general object from mongo dbd204f33
#64, maybe actually fix get general obj from db888058f
#64, towards general db find 3f56ed9
#64, fix error processing in server getting algo from db9ce7c46
#64, further fix to get obj from dba7891f7
#64, further further fix for getting obj from db7fbe01d
#64, add additional error checking for updating weights 9b286cb
#64, improve object saving to allow for update, do not save duplicate…fbceaf4
Spelling and grammer correction bb59116
Merge pull request #101 from cheetoblue/develop … b30972f

Commit: https://github.com/nolyoly/prosper-ai-node/commit/d1aa89a61c40297ae57cc40818ce324efd32b60d