examples/{embedding,multi-context}: add LICENSE blurb, cosmetics

[sbinet]

Signed-off-by: Sebastien Binet binet@cern.ch

[codecov]

Codecov Report

Merging #163 (01cbebd) into master (7f55cd3) will decrease coverage by 0.09%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##           master     #163      +/-   ##
==========================================
- Coverage   72.96%   72.86%   -0.10%     
==========================================
  Files          70       71       +1     
  Lines       11647    11678      +31     
==========================================
+ Hits         8498     8509      +11     
- Misses       2583     2600      +17     
- Partials      566      569       +3     

Impacted Files	Coverage Δ
main.go	12.90% <50.00%> (ø)
modules/runtime.go	49.62% <0.00%> (+3.75%)	⬆️
py/run.go	65.11% <0.00%> (+4.65%)	⬆️

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