docs: update

Signed-off-by: ISHIDA Wataru <ishida.wataru@lab.ntt.co.jp>

1 files changed, 34 insertions, 26 deletions

diff --git a/docs/sources/getting-started.md b/docs/sources/getting-started.md
index d7929146..5a64d440 100644
--- a/docs/sources/getting-started.md
+++ b/docs/sources/getting-started.md
@@ -30,41 +30,49 @@ $ source gobgp-completion.bash
 
 ## Configuration
 
-Currently, GoBGP can be configured via a configuration file. This example
-uses the following very simple configuration file, `gobgpd.conf`:
-
-```
-$ cat gobgpd.conf
-[Global]
-  [Global.Config]
-    As = 64512
-    RouterId = "192.168.255.1"
-
-[Neighbors]
-  [[Neighbors.NeighborList]]
-    [Neighbors.NeighborList.Config]
-      NeighborAddress = "10.0.255.1"
-      PeerAs = 65001
-
-  [[Neighbors.NeighborList]]
-    [Neighbors.NeighborList.Config]
-      NeighborAddress = "10.0.255.2"
-      PeerAs = 65002
+GoBGP can be configured via a configuration file or gRPC API. This example
+uses the following very simple configuration. All keys are case-insensitive.
+Default configuration format of GoBGP is [toml](https://github.com/toml-lang/toml).
+If you don't like `toml`, you can use `json`, `yaml` and `hcl` instead.
+
+```toml
+[global.config]
+  as = 64512
+  router-id = "192.168.255.1"
+
+[[neighbors]]
+  [neighbors.config]
+    neighbor-address = "10.0.255.1"
+    peer-as = 65001
+
+[[neighbors]]
+  [neighbors.config]
+    neighbor-address = "10.0.255.2"
+    peer-as = 65002
 ```
 
 ## Starting GoBGP
 
-Let's start gobgpd:
+Save the configuration above as gobgpd.conf and start gobgpd:
 
-```
+```bash
 $ sudo -E gobgpd -f gobgpd.conf
 {"level":"info","msg":"Peer 10.0.255.1 is added","time":"2015-04-06T20:32:28+09:00"}
 {"level":"info","msg":"Peer 10.0.255.2 is added","time":"2015-04-06T20:32:28+09:00"}
 ```
 
-Let's show the information of all the peers.
+If you use a configuration format other than `toml`, you must specify the format
+by `-t` option.
 
+```bash
+$ sudo -E gobgpd -t yaml gobgpd.yml
+{"level":"info","msg":"Peer 10.0.255.1 is added","time":"2015-04-06T20:32:28+09:00"}
+{"level":"info","msg":"Peer 10.0.255.2 is added","time":"2015-04-06T20:32:28+09:00"}
 ```
+
+Let's show the information of all the peers.
+
+```bash
 $ gobgp neighbor
 Peer          AS  Up/Down State       |#Advertised Received Accepted
 10.0.255.1 65001 00:00:14 Establ      |          1        5        5
@@ -73,7 +81,7 @@ Peer          AS  Up/Down State       |#Advertised Received Accepted
 
 Want to the details of a particular peer?
 
-```
+```bash
 $ gobgp neighbor 10.0.255.1
 BGP neighbor is 10.0.255.1, remote AS 65001
   BGP version 4, remote router ID 192.168.0.1
@@ -98,7 +106,7 @@ BGP neighbor is 10.0.255.1, remote AS 65001
 Note that the tab completion works for both peer names and commands.
 
 Check out the global table.
-```
+```bash
 $ gobgp global rib
    Network            Next Hop        AS_PATH    Age        Attrs
 *> 10.3.0.0/16        10.0.255.1      [65001]    00:05:41   [{Origin: 0} {Med: 0}]
@@ -112,7 +120,7 @@ $ gobgp global rib
 
 You also can look at adjacent rib-in and rib-out:
 
-```
+```bash
 $ gobgp neighbor 10.0.255.1 adj-in
    Network            Next Hop        AS_PATH    Age        Attrs
    10.3.0.0/16        10.0.255.1      [65001]    00:06:55   [{Origin: 0} {Med: 0}]