Merge tag 'v2.5.7'

v2.5.7
Make strong-cli catch signals and deliver to child
Run file through fixjsstyle
runctl: strong-supervisor replaces clusterctl

strong-supervisor's runctl utility replaces strong-cluster-control's
clusterctl utility.
Update generated documentation.
Extend strong-cli with generator-loopback and loopback-sdk-angular-cli
Sample app is now loopback-example-app
Update README.md
Update README.md
Add deploy command
Add pm and pm-install commands

Commands correspond to sl-pm and sl-pm-install from strong-pm.

SLN-1133 #resolves
runctl: strong-supervisor ~0.3.0 needed for runctl
v2.6.0
Merge branch 'release/2.6.0' into production