* Updates to the Excel Wapper and Files
- Added README.rst with updated Installation and Build Instructions
- Fixed PhaseSI() function in CoolProp.xlam
- Removed Deprecated Props() function in CoolProp.xlam
- Added get_global_param_string() function in CoolProp.xlam
- General overhaul of the TestExcel.xlsx example file
* Minor edit to README.rst
* Unprotect Example wkbk and rename VBA to CoolProp