build.gradle cleanup. war, wrapper, dependencies

+ chmod +x gradlew
+ Removed configuration jetty
+ Upped wrapper to 1.10
+ Introduced doFirst in war so zipTree is not run during configuration
.gitignores to idea files and logs
Created a JavaExec run task
Cleaned up some README.md

Added gradlew run and stuff
Merge pull request #1 from judoole/feature/run-task

Feature/run task