Update JWT lib to v3

Signed-off-by: Vishal Rana <vr@labstack.com>

Updated gommon/log

Signed-off-by: Vishal Rana <vr@labstack.com>

Updated readme

Signed-off-by: Vishal Rana <vr@labstack.com>

Context#Form() > Context#FormValue(), Context#Query() > Context#Query…

…Param()

Signed-off-by: Vishal Rana <vr@labstack.com>

Fixed recover and gzip middleware

Signed-off-by: Vishal Rana <vr@labstack.com>

GAE fix

Signed-off-by: Vishal Rana <vr@labstack.com>

Fixed test cases

Signed-off-by: Vishal Rana <vishal.rana@verizon.com>