add kalman source to package
implemented simple 2x2 matrix functionality as private functions in kalman module
kalman functions implemented (private interface)
somewhere to put all the constants
module should be agnostic of number of robots
implemented public interface - no doc and no tests yet
added some comments
adopted the *._member convention for private struct members
respect the cvra coding style...
test kalman handle initialization
test kalman measurement covariance update
first kalman update test
test covariance update
test position update simple
rename tests to something sensible
public functions handle bad input
unit test handling bad input
ignore dependency folder of custom packager
ignore autogenerated CMakeLists.txt
Merge pull request #14 from 31415us/master

should be ok :o)