Add api documentation.

API.md

@@ -0,0 +1,50 @@
+# flock
+
+## flock/acquire
+type: cfunction
+
+[flock.c#L57](flock.c#L57)
+
+```
+    (flock/acquire path wait-mode mode &opt flock)
+    
+    Open (potentially creating the file) an flock at path,with waitmode :block|:noblock and
+    mode :shared|:exclusive. Returns the lock, if the lock is non blocking, returns nil is
+    thelock was already held in an incompatible way.
+```
+
+## flock/locked?
+type: cfunction
+
+[flock.c#L111](flock.c#L111)
+
+```
+    (flock/locked? l)
+    
+    Check if the lock object has aquired a lock.
+```
+
+## flock/new
+type: cfunction
+
+[flock.c#L48](flock.c#L48)
+
+```
+    (flock/new)
+    
+    Create a new flock that is not locked or associated with any file.
+```
+
+## flock/release
+type: cfunction
+
+[flock.c#L117](flock.c#L117)
+
+```
+    (flock/release l)
+    
+    Release file lock.
+```
+
+
+Docs generated by: https://github.com/andrewchambers/janet-md-doc

README.md

@@ -17,3 +17,6 @@ Simple file locking with flock for janet.
   ...)
 ```
 
+## API
+
+[here](API.md)