Added Readme

README.MD

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+The Project is aimed at learning Java 8 Promises with Thread pools and event based programming model.
+
+
+Steps:
+
+1. Install Java 8.
+http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
+
+2. Install maven.
+https://maven.apache.org/download.cgi
+
+3. To Compile and Build
+mvn clean install
+
+
+4. To run
+
+java -jar target/ThreadPoolDownload-1.0-SNAPSHOT.jar
+
+Options:
+
+usage: utility-name
+
+ -d,--save-dir <arg>                    Directory to Save files
+
+ -f,--urls <arg>                        URLs in comma separated format
+
+ -j,--no-of-threads <arg>               Parallelism
+
+ -k,--fresh                             Force The Manager to Download all
+                                        parts again, don't resume
+
+ -x,--max-number-of-connections <arg>   Maximum Number of Connections per
+                                        URL
+
+
+
+Example:
+
+java -jar target/ThreadPoolDownload-1.0-SNAPSHOT.jar -j 10 -x 8 -d /tmp -f https://1.as.dl.wireshark.org/osx/Wireshark%202.2.4%20Intel%2064.dmg,http://s3.amazonaws.com/epubbud_epubs/5FPD5ML6/1984.epub