Refactored client + upload draft code
KN-5922 Proper async task chaining
KN-5922 Enhanced sample and bit of code refactoring
KN-5922 Removed app.config
Upload sample draft

untested code, don't know if its working
rename Upload.Sample to Knoema.Upload.Sample
Upload sample-Deserialization issue in upload verify
working upload.sample
modifications to client - verify with update, more meta data classes
Merge pull request #2 from rpanday/upload

KN-5922 Merged Rahul's changes to upload
removing commented code
Merge pull request #3 from rpanday/upload

KN-5922 Merged from fork
Merge pull request #4 from Knoema/upload

KN-5922 Driver code refactored and updated with upload APIs