Wrong info in README.md

[Stefan98167]

In README.md it says that when using mssql in js you should use NVarChar for strings.
That is wrong. NVarChar doesn't work. VarChar works.

JS Data Type To SQL Data Type Map

String -> sql.NVarChar
Number -> sql.Int
Boolean -> sql.Bit
Date -> sql.DateTime
Buffer -> sql.VarBinary
sql.Table -> sql.TVP

[dhensby]

"doesn't work" how? Do you have code to reproduce an error? And error stack?