Improve README formatting

Specifically:
* Display keywords and filenames in monospace
* Link to documentation for `pallet.action.remote-file`
* Display possible `postgres-settings` keys in an unordered list

README.md

@@ -13,67 +13,57 @@ and returns a server-spec for installing postgres.
 
 The postgres crate uses the following settings:
 
-:version
-a string to specify the point version of postgres (eg. "9.1"). The default
-is the version provided by the system's packaging system.
-
-:components
-a set of #{:server :libs :client}
-
-:strategy
-allows override of the install strategy (:packages, :package-source, or :rpm)
-
-:packages
-the packages that are used to install
-
-:package-source
-a non-default package source for the packages
-
-:rpm
-takes a map of remote-file options specifying a rpm file to install
-
-:default-cluster-name
-name of the default cluster created by the installer
-
-:bin
-path to binaries
-
-:owner
-unix owner for postgres files
-
-:postgresql_file
-path to postgresql.conf
-
-:has-pg-wrapper
-boolean flag for availability of a wrapper allowing command execution against
-a specified cluster
-
-:has-multicluster-service
-boolean flag specifying whether the init service is multi-cluster capable
-
-:initdb-via
-whether to use the initdb command (:initdb), or service (:service) to run initdb
-
-:options
-A map of options (See below)
-
-Options
-
-:data_directory
-Path to data storage location
-
-:hba_file
-Path to pg_hba.conf location
-
-:ident_file
-Path to pg_ident.conf location
-
-:external_pid_file
-Path to pid file
-
-:unix_socket_directory
-path to directory for unix sockets
-
+* `:version`
+  a string to specify the point version of PostgreSQL (e.g., `"9.1"`). The default is the version provided by the system's packaging system
+
+* `:components`
+  a set of one or more recognized keywords. The set of every component is `#{:server :libs :client}`.
+
+* `:strategy`
+  allows override of the install strategy (`:packages`, `:package-source`, or `:rpm`)
+
+* `:packages`
+  the packages that are used to install
+
+* `:package-source`
+  a non-default package source for the packages
+
+* `:rpm`
+  takes a map of [`remote-file` options](http://palletops.com/pallet/api/0.7/pallet.action.remote-file.html) specifying an RPM file to install
+
+* `:default-cluster-name`
+  name of the default cluster created by the installer
+
+* `:bin`
+  path to binaries
+
+* `:owner`
+  unix owner for Postgres files
+
+* `:postgresql_file`
+  path to `postgresql.conf`
+
+* `:has-pg-wrapper`
+  boolean flag for availability of a wrapper allowing command execution against a specified cluster.
+
+* `:has-multicluster-service`
+  boolean flag specifying whether the init service is multi-cluster capable.
+
+* `:initdb-via`
+  whether to use the initdb (`:initdb`), or service (`:service`) to run initdb
+
+* `:options`
+  A map of options:
+  - `:data_directory`
+    path to storage location
+  - `:hba_file`
+    path to `pg_hba.conf` location
+  - `:ident_file`
+    path to `pg_ident.conf` location
+  - `:external_pid_file`
+    path to pid file
+  - `:unix_socket_directory`
+    path to directory for unix sockets
 
 ## Support