Stability of the plugin

[nguyenLisa]

• Make sure that the plugin works with newer versions of Eclipse (Neon +)
• Make sure that the plugin works on the major OS (Windows, Linux, OSX)
• Make sure that the plugin works on the newer versions of Java (1.7 +)

[ahmedammad]

I have checked the plugin using Java 8, 9 and 10 on Windows using different Eclipse versions (Oxygen, Photon and 2018-09). Below are my findings:

1. While using Eclipse Oxygen on Java 8 the plugin works fine but on java 9 and 10 the eclipse keeps on
   crashing upon starting.
2. On Eclipse Photon and 2018-09 using java 8, 9 and 10 the eclipse crashes upon starting with a
   message to view error log file.

The error log file contains the same exceptions as mentioned in the debugging part of this issue #3

[ahmedammad]

For Linux the results are same as in the above comment.

[ahmedammad]

The plugin now works on all latest eclipse version using java 8. Changes done for this fb7e19f