Update Metadata Information

[rpc5102]

Update the following information on:
https://educationshinyappteam.github.io/Style_Guide/coding.html#metadata

Drop:

## App Meta Data----------------------------------------------------------------
APP_TITLE  <<- "Title of the app"
APP_DESCP  <<- paste(
  "Description of the app",
  "use multiple lines to keep the description legible."
)
## End App Meta Data------------------------------------------------------------

In favor of:

EducationShinyAppTeam/App_Template#4

[rpc5102]

Resolved in: https://github.com/EducationShinyAppTeam/Style_Guide/commit/342d1bd03cb03df0402f182c02a3adb291525d00.

[neilhatfield]

Reopening so that narrative text and examples of the progress EducationShinyAppTeam/App_Template#4 can be worked into the guide. This would include:

• Formatting long lines for readability in DESCRIPTION
• Entering multiple values for Learning Objectives
• Explanations and guidelines on when to use which roles (aut, cre, ctb)