Update CMakeLists.txt
Merge pull request #40 from MichaelRuhnke/patch-1

Update CMakeLists.txt
Thx :-)
removing using namespace from all headers

fix for #42
some documentation of tne factory
adding travis config file
fix some warnings found by clang
travis configuration
Working on C++11
Fixed g2o on iOS

Conflicts:
	CMakeLists.txt
	g2o/config.h
update includes in tictoc
travis config
drop tr1 stuff and use C++11 types
travis
dropping register from the flex scanner
Merge branch 'master' of github.com:RainerKuemmerle/g2o
modify scripts
fix
testing
ok let's see
travis scripts for OS X