Update Gem dependencies (add git)

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
Now base the Gemfile content on the information provided in the .gemspec file

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
Update Rakefile to target only Rspec tests

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
Update loader

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
Start RSpec test of falkorlib

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
add common function  under FalkorLib::Common

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
Add management of YAML functions

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>