Add architecture documentation

[gaocegege]

Close #119

Signed-off-by: Ce Gao ce.gao@outlook.com

[gaocegege]

PTAL @jeremydouglass @hawkingrei

I am not confident in my English 🤔

[jeremydouglass]

This is a very good draft! The important details are here, it is well organized, and the English is clear. My main feedback:

1. Order of the overview: Say what this project is immediately, then give background on what Processing is. Currently the project is introduced on the fourth paragraph, this is confusing.
2. There are a few typos, like "skectches." Run spellcheck before submitting.
3. Some of the English could be slightly improved.

Rather than give details, I will add a commit.

...plus, I think architecture needs to be re-organized to be more clear. Adding an additional commit -- please read and see if this is an improvement.

[gaocegege]

s/a/an?

[jeremydouglass]

Not sure I understand. Is this sed for changing to "an Remote Method Invocation" and "an SketchServiceManager" ? Those changes aren't needed.

"a" comes before closed consonant letters and sounds here like "Remote" and "Sketch", "an" would come before open vowel letters and sounds like "Interface" or "Extends."

[gaocegege]

OK, I got it! I thought we need to change from a Remote to an Remote.

[jeremydouglass]

In spoken English, people would say "a Remote" (AY reemOHT). However, they would say "an R.M.I." (AAN AHR-EHM-IY). Changing "a" to "an" is a way to keep the two vowel sounds (AY AHR) from blending together.

[gaocegege]

LGTM 🎉