Merge branch 'plumed-update' of github.com:lab-cosmo/i-pi into plumed…

…-update

examples/features/path_integral_molecular_dynamics/README.md

@@ -2,9 +2,9 @@ Path integral molecular dynamics.
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 `standard_pimd`: path integral molecular dynamics using the PILE thermostat and MTS for propagating the ring polymer modes.
 `cayley_pimd`: path integral molecular dynamics using the PILE thermostat and Cayley integrator for propagating the ring polymer modes.
-`constrained_centroid`: constant-temperature PIMD, with the centroid held fixed in the initial position. useful to compute the centroid potential of mean force.
+`constrained_centroid`: constant-temperature PIMD, with the centroid held fixed in the initial position. Useful to compute the centroid potential of mean force.
 `piglet`: path integral molecular dynamics using the PIGLET thermostat
-`pimd+mts`:  path integral molecular dynamics with MTS algorithm to integrate short and long ranged forces with different timesteps.
+`pimd+mts`:  path integral molecular dynamics with MTS algorithm to integrate short and long ranged forces with different timesteps. Includes option to print out the slow and/or fast force components.
 `rpc`:  path integral molecular dynamics with RPC algorithm to use different number of replicas for short and long ranged forces.
 scpimd:  path integral molecular dynamics with the Suzuki-Chin splitting.
 `water_remd`: path integral molecular dynamics with replica-exchange spanning different temperatures and pressures.