Readme update

Author: goulinkh

.gitignore

@@ -6,8 +6,9 @@
 *.dylib
 
 # binary
-podcast-cli
-main
+podcast-cli*
+main*
+!main.go
 
 # Test binary, built with `go test -c`
 *.test

README.md

@@ -15,14 +15,14 @@ Fetch the [latest release](https://github.com/goulinkh/podcast-cli/releases)
 #### Linux
 
 ```bash
-sudo wget https://github.com/goulinkh/podcast-cli/releases/download/1.2.0/podcast-cli-1.2.0-linux-amd64 -O /usr/local/bin/podcast-cli
+sudo wget https://github.com/goulinkh/podcast-cli/releases/download/1.3.0/podcast-cli-1.3.0-linux-amd64 -O /usr/local/bin/podcast-cli
 sudo chmod +x /usr/local/bin/podcast-cli
 ```
 
 #### OS X
 
 ```bash
-sudo curl -Lo /usr/local/bin/podcast-cli https://github.com/goulinkh/podcast-cli/releases/download/1.2.0/podcast-cli-1.2.0-darwin-amd64
+sudo curl -Lo /usr/local/bin/podcast-cli https://github.com/goulinkh/podcast-cli/releases/download/1.3.0/podcast-cli-1.3.0-darwin-amd64
 sudo chmod +x /usr/local/bin/podcast-cli
 ```
 
@@ -35,6 +35,8 @@ sudo chmod +x /usr/local/bin/podcast-cli
 | ------------------------ | ------------------------------------------- |
 | `-h or  --help`          | Print help information                      |
 | `-s or --search <query>` | List podcasts that matches the search query |
+| `-r or --rss <query>`    | Custom podcast rss url source               |
+| `-o or --offset <query>` | Play episode number                         |
 
 ### Keybindings