Fix docker for mac. Bump to 0.0.4

.gitignore

@@ -0,0 +1 @@
+binaries/

README.md

@@ -14,10 +14,15 @@ Docker 1.10 and docker deamon running.
 
 ## Installation
 
+### Homebrew (OSX only)
+```sh
+brew install dockward
+```
+
 ### Binary
-Download binary for other platforms on the [releases](https://github.com/abiosoft/dockward/releases) page.
+Download binary for other platforms on the [releases](https://github.com/abiosoft/dockward/releases) page or replace download link accordingly for OSX.
 ```sh
-curl -LO https://github.com/abiosoft/dockward/releases/download/0.0.2/dockward_linux_amd64.tar.gz \
+curl -LO https://github.com/abiosoft/dockward/releases/download/0.0.4/dockward_linux_amd64.tar.gz \
 && tar xvfz dockward_linux_amd64.tar.gz \
 && sudo mv dockward_linux_amd64 /usr/local/bin/dockward \
 && sudo chmod +x /usr/local/bin/dockward
@@ -26,7 +31,7 @@ curl -LO https://github.com/abiosoft/dockward/releases/download/0.0.2/dockward_l
 ### Source
 Requires Go.
 ```sh
-go get github.com/abiosoft/dockward
+go get -v -u github.com/abiosoft/dockward
 ```
 
 ## Usage

cli/cli.go

@@ -1,6 +1,7 @@
 package cli
 
 import (
+	"errors"
 	"flag"
 	"fmt"
 	"io/ioutil"
@@ -10,12 +11,12 @@ import (
 )
 
 const (
-	AppName = "dockward"
-	Version = "0.0.3"
-	Usage   = `Usage: dockward [options...] <port> [<container port> <filter>] [endpoints...]
+	appName    = "dockward"
+	appVersion = "0.0.4"
+	appUsage   = `Usage: dockward [options...] <port> [<container port> <filter>] [endpoints...]
 try 'dockward --help' for more.
 `
-	FullUsage = `Usage: dockward [options...] <port> [<container port> <filter>] [endpoints...]
+	appFullUsage = `Usage: dockward [options...] <port> [<container port> <filter>] [endpoints...]
 
 options:
   --host=false         Host mode, forward to host endpoints instead of container.
@@ -75,24 +76,24 @@ func parseCli() cliConf {
 	exitIfErr(err)
 
 	if conf.Help {
-		fmt.Println(FullUsage)
+		fmt.Println(appFullUsage)
 		exit(nil)
 	}
 	if conf.Version {
-		fmt.Println(AppName, "version", Version)
+		fmt.Println(appName, "version", appVersion)
 		exit(nil)
 	}
 
 	switch fs.NArg() {
 	case 0:
-		usageErr(fmt.Errorf("port missing."))
+		usageErr(errors.New("port missing"))
 	case 1:
 		if !conf.Host {
 			// docker mode
-			usageErr(fmt.Errorf("filter missing."))
+			usageErr(errors.New("filter missing"))
 		} else if !conf.remoteClient {
 			// host mode
-			usageErr(fmt.Errorf("endpoint(s) missing."))
+			usageErr(errors.New("endpoint(s) missing"))
 		}
 
 	}
@@ -140,7 +141,7 @@ func parseCli() cliConf {
 }
 
 func usageErr(err error) {
-	exit(fmt.Errorf("dockward: %v\n%v", err, Usage))
+	exit(fmt.Errorf("dockward: %v\n%v", err, appUsage))
 }
 
 func exitIfErr(err error) {