remove references to status & render commands

[glours]

- What I did Remove references to status & render commands in README (app & examples)

- How to verify it Check all README and verify there's no references to docker app status nor docker app render commands

- A picture of a cute animal (not mandatory but encouraged)

[glours]

@chris-crone should we keep documentation for render command?

[codecov[bot]]

Codecov Report

Merging #674 into master will increase coverage by 0.73%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #674      +/-   ##
==========================================
+ Coverage   71.45%   72.19%   +0.73%     
==========================================
  Files          57       52       -5     
  Lines        3020     2636     -384     
==========================================
- Hits         2158     1903     -255     
+ Misses        572      490      -82     
+ Partials      290      243      -47

Impacted Files	Coverage Δ
internal/commands/push.go	45.22% <0%> (-6.75%)	:arrow_down:
internal/compose/compose.go	74.35% <0%> (-5.13%)	:arrow_down:
internal/commands/root.go	80.43% <0%> (-2.76%)	:arrow_down:
internal/commands/build/compose.go
internal/commands/build/build.go
internal/commands/build/types.go
internal/packager/bundle.go
internal/commands/build/digest.go

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