notes about how to use EKF
small clarification
Merge pull request #3 from froj/master

ok the added theory sounds nice (= I'm not yet sure if it's worth the effort implementing, I'd rather stick with the most simple thing^^ we'll see
Use stable version of CppUTest
Run make in script instead of before_script

Compilation issues should result in failed Travis CI build rather than
'errored' ones.
Merge pull request #5 from antoinealb/master

thanks ^^