Use new stream value update API

Added deleteValues() function in the library.
Allow numeric values in stream value part of response.
Change API name from `post` to `put` to avoid ambiguity.
Use new stream value update API.
Merge branch 'master' into fix/api-update

Conflicts:
	README.md
readLocation error
Adding example for CC3200
Merge pull request #1 from attm2x/fix/api-update

Sync with recent Arduino updates