Merge pull request #1180 from gtribello/master

cmake/CMakeLists.txt

doc/src/Build_extras.txt

doc/src/Packages_details.txt

doc/src/fix_plumed.txt

doc/src/fixes.txt

doc/src/lammps.book

examples/USER/plumed/data.peptide

examples/USER/plumed/in.peptide-plumed

examples/USER/plumed/log.24Oct18.peptide-plumed.g++.1

examples/USER/plumed/log.24Oct18.peptide-plumed.g++.4

examples/USER/plumed/plumed.dat

examples/USER/plumed/reference/colvar

examples/USER/plumed/reference/p.log

lib/plumed/.gitignore

lib/plumed/Install.py

lib/plumed/Makefile.lammps.static

lib/plumed/README

src/.gitignore

src/Makefile

src/USER-PLUMED/Install.sh