Added pypi badge

README.md

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+[![PyPI version](https://badge.fury.io/py/logzio-python-handler.svg)](https://badge.fury.io/py/logzio-python-handler)
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 # The Logz.io Python Handler
 This is a Python handler that sends logs in bulk over HTTPS to Logz.io. The handler uses an internal buffer, and you can choose the drain timeout as well as the number of messages to hold in the queue before the drain. Everything works in threads, so if the main program exists, the threads will continue to work until all logs are drained.
 
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 - logs_drain_count - Number of logs to keep in buffer before draining
 - logs_drain_timeout - Time to wait before draining, regardless of the previouse setting
 - logzio_type - Log type, for searching in logz.io (defaults to "python")
-- appname - Your django app
+- appname - Your django app