Update How-to-compile-and-run-HapticGlove.md

[EhsanRanjbari]

@kouroshD

[kouroshD]

Notice that, in Windows normally we use rapid environment variable. This was documented in https://github.com/robotology/robotology-superbuild/blob/6aedd4272d1e69619489548d127c7fdcd3a71869/doc/deprecated-installation-methods.md

Moreover, you may use build in functionalities of windows as in https://docs.oracle.com/en/database/oracle/machine-learning/oml4r/1.5.1/oread/creating-and-modifying-environment-variables-on-windows.html#GUID-DD6F9982-60D5-48F6-8270-A27EC53807D0

Moreover, if temporarily you want to export them, it depends on the shell environment you are using:

• command prompot: https://www3.ntu.edu.sg/home/ehchua/programming/howto/Environment_Variables.html#:~:text=To%20set%20an%20environment%20variable,set%20varname%20%3Dvalue%20%22).
• powershell: https://www.tutorialspoint.com/how-to-set-environment-variables-using-powershell#:~:text=To%20set%20the%20environmental%20variable,environment%20variable%20will%20be%20created.