🔒 Add flag for battery

[TanmayPatil105]

Changes proposed

• Battery percentage is disabled by default
• Add -b flag to display battery percentage
• Added customisations to README.md

[codecov-commenter]

Codecov Report

Merging #117 (80f6b19) into main (9da2491) will decrease coverage by 0.06%. The diff coverage is 22.22%.

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@@            Coverage Diff             @@
##             main     #117      +/-   ##
==========================================
- Coverage   24.60%   24.55%   -0.06%     
==========================================
  Files           4        4              
  Lines         443      448       +5     
==========================================
+ Hits          109      110       +1     
- Misses        334      338       +4     

Impacted Files	Coverage Δ
src/main.cpp	20.00% <22.22%> (ø)

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[TanmayPatil105]

@youpong prefer proposing changes in this PR instead of creating a new PR :)

[TanmayPatil105]

So, Just b should be added to the optstring argument of getopt(3). Now we are trying to add :b preceded by a colon:

Done

[TanmayPatil105]

Should I draft a new release or wait until we get all things correct related to INSTALL_LIB_DIR get right? It didn't break the code. So, we can ig.

[youpong]

No need to wait.