Introduced Append Data functionality.
A user can now choose to either append the data of two files together or
overwrite the data
Merge branch 'master' of https://github.com/EaseTech/easytest-core

# By Anuj kumar
# Via Anuj kumar
* 'master' of https://github.com/EaseTech/easytest-core:
  [maven-release-plugin] prepare for next development iteration
  [maven-release-plugin] prepare release easytest-core-1.3.1

e commit.