Readme update

[aniampio]

Add acknowledgements for the EU project POINTER from which we got money to work on Sphinx.

Part added at the bottom of the README file
"This code has received partial funding from the Next Generation Internet POINTER programme of the European Commission, as part of the Horizon 2020 Research and Innovation Programme, under Grant Agreement Nº 871528."

[codecov-commenter]

Codecov Report

Base: 84.78% // Head: 70.50% // Decreases project coverage by -14.27% ⚠️

Coverage data is based on head (1bee1be) compared to base (26d3042).
Patch coverage: 0.00% of modified lines in pull request are covered.

Additional details and impacted files

@@             Coverage Diff              @@
##           develop      #87       +/-   ##
============================================
- Coverage    84.78%   70.50%   -14.28%     
============================================
  Files           20       21        +1     
  Lines         1676     2265      +589     
============================================
+ Hits          1421     1597      +176     
- Misses         255      668      +413     

Impacted Files	Coverage Δ
src/header/delays.rs	89.23% <ø> (ø)
src/header/filler.rs	95.83% <ø> (-0.05%)	⬇️
src/header/routing/nodes.rs	88.95% <0.00%> (ø)
src/payload/mod.rs	88.94% <0.00%> (ø)
src/route.rs	43.66% <0.00%> (ø)
src/surb/mod.rs	79.33% <0.00%> (ø)
src/error.rs	11.29% <0.00%> (-22.05%)	⬇️
src/lib.rs	32.24% <0.00%> (ø)

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