Refactor Plivo Client and PHLORestClient#86

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M Suhas Reddy (suuhas) wants to merge 1 commit intoplivo:betafrom

suuhas:beta

Commits on Jan 9, 2019

Refactor PHLO and Plivo Client, Created a BaseClient, Updated Getters and Updaters, Added PHLO api examples
M Suhas Reddy (suuhas)
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