Merge pull request #16 from tehnerd/master

fix: now we are encode label according to rfc3107 (with BOS);
tidy community parsing code
Merge branch 'master' of github.com:thomas-mangin/exabgp
use unpack as API name
comestic change
move checking of vpls in configuration file
API name fix, new function
add unpack API to originatorid
add Orange community code to repo
re-structure, move into its folder
split communities
rename ECommunity to ExtendedCommunity
remove assert
all orange code in, rework their route target API
all orange code in
adding L2Info with the new ExtendedCommunity API
adding comments and questions
rename a class