Update README.md

Author: RajRays

README.md

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 # OS_Java_Shell
 Operating Systems Course Project: Creating A Shell Interface Using Java
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 Part 1
 ___________
 * Implement SimpleShell
 * Use ProcessBuilder Class To Create External Processes
 
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 Part 2
 ___________
 
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 		-> Change To Root Directory 
 
 * ArrayList Data Structure Used To Decompose And Pass Commands To ProcessBuilder
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 Part 3
 ___________