update readme

README

@@ -13,8 +13,8 @@ Prerequisites
 Scidetect was developed and tested on Ubuntu Linux.  It should work on
 other system also.
 To run ScidDetect, you will need:
--Java at least 1.6
-You will need the following components:
+-Java SE 6 or higher.
+You will also need the following components:
 -SciDetect_local.jar
 -config.txt
 -A directory for data samples.
@@ -34,8 +34,8 @@ For more information, please refer to Documentation.pdf
 
 Makefile
 ==================================
-A Makefile is also provided if you want to recompile the program.
-Simply navigate to the program directory and $make
+A Makefile is also provided in case you want to recompile the program.
+In a terminal window, simply navigate to the program directory and $make
 
 
 Source code