added OS X documentation to doc/init.md

Author: kevcooper

doc/init.md

@@ -13,8 +13,9 @@ can be found in the contrib/init folder.
 1. Service User
 ---------------------------------
 
-All three startup configurations assume the existence of a "bitcoin" user
+All three Linux startup configurations assume the existence of a "bitcoin" user
 and group.  They must be created before attempting to use these scripts.
+The OS X configuration assumes bitcoind will be set up for the current user.
 
 2. Configuration
 ---------------------------------
@@ -48,6 +49,8 @@ see `contrib/debian/examples/bitcoin.conf`.
 3. Paths
 ---------------------------------
 
+3a) Linux
+
 All three configurations assume several paths that might need to be adjusted.
 
 Binary:              `/usr/bin/bitcoind`  
@@ -62,6 +65,13 @@ reasons to make the configuration file and data directory only readable by the
 bitcoin user and group.  Access to bitcoin-cli and other bitcoind rpc clients
 can then be controlled by group membership.
 
+3b) Mac OS X
+
+Binary:              `/usr/local/bin/bitcoind`  
+Configuration file:  `~/Library/Application Support/Bitcoin/bitcoin.conf`  
+Data directory:      `~/Library/Application Support/Bitcoin`
+Lock file:           `~/Library/Application Support/Bitcoin/.lock`
+
 4. Installing Service Configuration
 -----------------------------------
 
@@ -97,6 +107,17 @@ Using this script, you can adjust the path and flags to the bitcoind program by
 setting the BITCOIND and FLAGS environment variables in the file 
 /etc/sysconfig/bitcoind. You can also use the DAEMONOPTS environment variable here.
 
+4e) Mac OS X
+
+Copy org.bitcoin.bitcoind.plist into ~/Library/LaunchAgents. Load the launch agent by
+running `launchctl load ~/Library/LaunchAgents/org.bitcoin.bitcoind.plist`.
+
+This Launch Agent will cause bitcoind to start whenever the user logs in.
+
+NOTE: This approach is intended for those wanting to run bitcoind as the current user.
+You will need to modify org.bitcoin.bitcoind.plist if you intend to use it as a
+Launch Daemon with a dedicated bitcoin user.
+
 5. Auto-respawn
 -----------------------------------