Version 2.0.0

• New functionality added -> readMultipleFields a. Read the fields, status, location and created-at values for the last ingested feed to a channel b. Unit tests added for the new function
• Refactored source code - ThingSpeak.h
• Unit tests added for changed functions
• GitHub issue #53 addressed
• Added feature to implement secure connection for ThingSpeak Client library a. Added unit tests b. Added new examples