update readme to the current status of the project

3 files changed, 39 insertions, 6 deletions

diff --git a/README.md b/README.md
index d74cbad..c76a9a7 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,39 @@
-# aplus command line utility
+# A+Attendance CLI
 
-This is an cli utility initially created for students at Florida Polytechnic University to submit their aplus codes. 
-In time, we intend to generalize this utility to all universities.
-In the meantime however, any students from other universities wishing to use the utility may change the instance_url (the main URL you see before the / when you use Canvas) variables.
+This is a CLI utility initially created for students at Florida Polytechnic University to submit their A+ attendance codes, but can be used for other
+universities using Canvas and A+Attendance.
+
+## Building/Installing
+
+To compile this program, you need `go` installed as well as need to set two
+environment variables in your shell's configuration file (like `~/.profile` or it's rc file) for your Canvas instance URL and your account's API key.
+
+### Getting an API key
+
+When logged into your university's Canvas site, go to Account -> Settings -> New Access Token -> (give any name or expiration date) -> store the Token somewhere.
+
+### Setting the Environment Variables
+
+In your shell's configuration file, add:
+```sh
+export CANVAS_INSTANCE="https://youruniversityhere.instructure.com"
+export CANVAS_API_KEY="the_canvas_access_token_you_stored_somewhere"
+
+# below not needed if go is already setup
+export GOPATH=$HOME/.local/go
+export GOBIN=$GOPATH/bin
+export PATH=$PATH:$GOBIN
+```
+
+### Installing
+
+Simply run `go install codeberg.org/flpolyaplus/aplus@latest`.
 
 ## Usage
 
+### Show help message
+`aplus --help`
+
 ### List all courses and canvas course codes
 `aplus --list-all`
 
@@ -15,6 +43,11 @@ In the meantime however, any students from other universities wishing to use the
 ### Enter code for a specified course
 `aplus --code <code> --course <canvas_course_number>`
 
+If no course is specified, the code is tried on all active courses.
+
+### Show timetable for a specified course
+`aplus --timetable --course <canvas_course_number>`
+
 ## Mirrors
 [Codeberg](https://codeberg.org/flpolyaplus/aplus/)
 
diff --git a/canvas.go b/canvas.go
index 7020658..f1a2375 100644
--- a/canvas.go
+++ b/canvas.go
@@ -14,7 +14,7 @@ import (
 )
 
 func initialize() {
-        instance_url := "https://floridapolytechnic.instructure.com"
+        instance_url := os.Getenv("CANVAS_INSTANCE")
         base_link = instance_url + "/api/v1"
         token = os.Getenv("CANVAS_API_KEY")
         jar, _ := cookiejar.New(&cookiejar.Options{
diff --git a/main.go b/main.go
index cd110ad..c3fe1a5 100644
--- a/main.go
+++ b/main.go
@@ -24,7 +24,7 @@ func usage() {
         fmt.Println("  -t, --timetable\tlists the class sessions in a course")
         fmt.Println("  -v, --verbose\tprints with verbose output")
         fmt.Println("  -h, --help\tdisplays this help message")
-        fmt.Println("  -p, --profile\twrites cpu profile to a file")
+        fmt.Println("  -p, --profile\twrites cpu profile to a file (for debugging/optimizing)")
 }
 
 func main() {