Correct GAMS indentation reading, add package help page

[giannou]

No description provided.

[tscheypidi]

did you test that this change does not break anything in REMIND and MAgPIE?

[codecov]

Codecov Report

Merging #25 (665cbf9) into master (ddebbf1) will not change coverage.
The diff coverage is 29.41%.

❗ Current head 665cbf9 differs from pull request most recent head 384a22e. Consider uploading reports for the commit 384a22e to get more accurate results

@@           Coverage Diff           @@
##           master      #25   +/-   ##
=======================================
  Coverage   31.24%   31.24%           
=======================================
  Files          44       44           
  Lines        1434     1434           
=======================================
  Hits          448      448           
  Misses        986      986           

Impacted Files	Coverage Δ
R/codeCheck.R	49.14% <25.00%> (ø)
R/readDeclarations.R	82.35% <100.00%> (ø)

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[giannou]

did you test that this change does not break anything in REMIND and MAgPIE?

codeCheck generates no warnings for both models, but I'll also start test runs to be completely sure. good point

[giannou]

Both models run smoothly