remove eclipse related files
ignore eclipse related files
Merge branch 'master' into no_eclipse

Conflicts:
	.gitignore
remove IDEA IntelliJ related files from source control
ignore IntelliJ IDEA related files
Merge branch 'master' into coordinates
add setCoordinate method, issue #78
add Constructor that takes a Coordinate instance as a parameter, issue #78
reorder tests
switch order of Polar coordinate parameters : radius, angle; issue #78