Fixed TypeError: not enough arguments for format string

Merge pull request #9 from Mattikin/master

Fixed TypeError: not enough arguments for format string

Fixed TypeError

Fixed Error: "TypeError: a float is required"

v2.0.4: Merge pull request #6 from Mattikin/master

Added performance metrics for ESXi Host, added thresholds for CPU and Memory usage

v2.0.3: Merge pull request #4 from turingmachine/master

Adds checks to ensure data structure exists before accessing value, prevents get_info from failing silently

v2.0.1: Merge pull request #1 from Mattikin/master

VMwareESXiMonitor 2.0.1