Update CLI description

[JSAbrahams]

• Add note that annotate is buggy.
• Shorten --output description.

[codecov[bot]]

Codecov Report

Merging #312 (848c7da) into develop (a4a9f1d) will increase coverage by 0.42%. The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop     #312      +/-   ##
===========================================
+ Coverage    86.30%   86.72%   +0.42%     
===========================================
  Files          105      105              
  Lines        10825    10928     +103     
===========================================
+ Hits          9342     9477     +135     
+ Misses        1483     1451      -32     

Impacted Files	Coverage Δ
src/check/context/clss/mod.rs	77.98% <0.00%> (-1.84%)	:arrow_down:
src/lib.rs	85.23% <0.00%> (+0.51%)	:arrow_up:
src/generate/convert/definition.rs	90.26% <0.00%> (+0.74%)	:arrow_up:
src/generate/name.rs	98.48% <0.00%> (+98.48%)	:arrow_up:

:mega: Codecov can now indicate which changes are the most critical in Pull Requests. Learn more