Add Unix/mac documentation.

Author: aadnk

README.md

@@ -18,10 +18,14 @@ Before running RemaTransactionParser, first ensure that you have Java 8 or later
 To install RemaTransactionParser, download the latest release from "Releases", and simply extract (or build - see below) RemaTransactionParser to a folder. Optionally, you may add this folder to your PATH variable. Otherwise, always specify RemaTransactionParser by its full file path, or navigate to the folder (_cd_) in the command line.
 
 ## Running
-Executing the following command in the command line will convert the JSON-file to an Excel/SQL file. Substitue _source-json_ and _destination-file_ with the corresponding correct file paths:
+Executing the following command in the command line will convert the JSON-file to an Excel/SQL file. Substitute _source-json_ and _destination-file_ with the corresponding correct file paths:
 ```bat
 RemaTransactionParser source-json destination-file
 ```
+For Unix/Mac, use the included SH script:
+```batch
+./RemaTransactionParser.sh source-json destination-file
+```
 The file extension of _destination-file_ specifies the output format - either XLSX or SQL. You may override this behavior by using the -format flag.
 
 ## Command Line