Add stages documentation and use the actual badges

[jdbaldry]

Signed-off-by: Jack Baldry [email protected]

[github-actions]

Overall readability score: 60.17 (🟢 +0.01)

File	Readability
index.md	68.04 (🟢 +0.26)

View detailed metrics

🟢 - Shows an increase in readability
🔴 - Shows a decrease in readability

File	Readability	FRE	GF	ARI	CLI	DCRS
index.md	68.04	48.5	8.61	10.3	11.24	6.56
	🟢 +0.26	🟢 +0	🟢 +0.03	🟢 +0.1	🟢 +0	🟢 +0.02

Averages:

	Readability	FRE	GF	ARI	CLI	DCRS
Average	60.17	47.07	9.64	11.77	12.13	7.33
	🟢 +0.01	🟢 +0	🟢 +0	🟢 +0	🟢 +0	🟢 +0

View metric targets

Metric	Range	Ideal score
Flesch Reading Ease	100 (very easy read) to 0 (extremely difficult read)	60
Gunning Fog	6 (very easy read) to 17 (extremely difficult read)	8 or less
Auto. Read. Index	6 (very easy read) to 14 (extremely difficult read)	8 or less
Coleman Liau Index	6 (very easy read) to 17 (extremely difficult read)	8 or less
Dale-Chall Readability	4.9 (very easy read) to 9.9 (extremely difficult read)	6.9 or less