Change flag risk-threshold

CHANGELOG:

• Flag modified from risk_threshold to risk-threshold

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For installing in Linux & OSX:

$ curl -L https://github.com/appknox/appknox-go/releases/download/1.0.1/appknox-`uname -s`-x86_64 > /usr/local/bin/appknox && chmod +x /usr/local/bin/appknox

Release of cicheck command

For installing in Linux & OSX:

$ curl -L https://github.com/appknox/appknox-go/releases/download/1.0.0/appknox-`uname -s`-x86_64 > /usr/local/bin/appknox && chmod +x /usr/local/bin/appknox

whoami Command.

For installing in Linux & OSX:

$ curl -L https://github.com/appknox/appknox-go/releases/download/0.0.2/appknox-`uname -s`-x86_64 > /usr/local/bin/appknox && chmod +x /usr/local/bin/appknox

Initial release

For installing in Linux & OSX:

$ curl -L https://github.com/appknox/appknox-go/releases/download/0.0.1/appknox-`uname -s`-x86_64 > /usr/local/bin/appknox && chmod +x /usr/local/bin/appknox