updated the API docs and added some links

docs/api.md

@@ -27,6 +27,10 @@ Returns true or false if *pass* is the correct password for *user*.
 Generates *len* random printable characters and returns them.
 #### os.su(*user*,*pass*)
 Sets the user ID of the current process to *user* if *user* and *password* are verified by `os.verifyuser`.
+#### os.setuattr(*user*,*field*,*value*)
+Sets the *field* attribute of *user* to *value*.
+#### os.getuattr(*user*,*field*)
+Returns the value of *field* for *user*.
 
 ### event
 #### event.get()
@@ -97,6 +101,8 @@ Writes *data* to *fobj* (if in write mode)
 Closes *fobj*, flushing buffers and removing the object from memory.
 
 ### shutil
+#### exec(*command*)
+Executes *command* as if it had been typed into a shell (lush, specifically).
 #### cd(*path*)
 Alias to fs.cd
 #### rm(*path*)
@@ -159,8 +165,12 @@ This is triggered to make a tty driver attached to *session* write *text* to the
 
 
 ## Applications
-### luash(*sI*)
-Spawns a luash instance for session *sI*
+### login()
+Displays a login screen allowing for changing user.  
+### loginmanager(*sI*)
+Runs a program that will repeatedly display a login screen and spawn a shell on login.  
+### lush(*sI*)
+Spawns a lush instance for session *sI*
 ### skex(*fname*)
 Launches an instance of the skex text editor, optionally reading *fname* at startup.  
 May actually spawn skex2.

docs/index.md

@@ -1,6 +1,6 @@
 ## PsychOS
 
-PsychOS is a single-user cooperative multitasking operating system for OpenComputers.
+PsychOS is a multi-user cooperative multitasking operating system for OpenComputers.
 
 ### System requirements:
 
@@ -24,3 +24,9 @@ PsychOS is a single-user cooperative multitasking operating system for OpenCompu
 - [Building PsychOS](building.html)
 - [API documentation](api.html)
 - [Filesystem layout](fhs.html)
+
+### Sources and contributing
+
+PsychOS has its [source code on GitHub](https://github.com/XeonSquared/PsychOS) and is open to pull requests, bug reports and other forms of contribution.
+
+In addition, some [extra PsychOS related projects](https://git.shadowkat.net/izaya/psychos-programs) can be found on the [SKS Gogs](https://shadowkat.net) instance