Tutorial links added
Update JavaTanks.java
Merge branch 'development' of http://github.com/magniffico/JavaTanks into development
New git set up tutorial on linux
Update How_to_set_up_git.md
Update How_to_set_up_git.md
Update How_to_set_up_git.md
Update How_to_set_up_git.md
Added core classes
.gitignore ignores compiled files, makefile is to compile everything in linux
Core classes are now included in the main class
Updated README

Updated README to point out important tutorial
Update README.md
Modified core to be more suitable
Merge branch 'testing' of https://github.com/magniffico/JavaTanks into testing
Minor modification, making git ignore all temprorary files
Modified to more sensible structure
Added Entity class
Modified classes to prepare input
Added Land class