Improve usage and readme content

Makefile

@@ -4,16 +4,11 @@ build:
 	@go build -o ~/go/bin/diceware .
 
 build_windows:
-	@GOOS=windows go build -o ./pkg/diceware . \
-		&& zip ./pkg/diceware_windows_$(GOARCH).zip ./pkg/diceware \
-		&& rm ./pkg/diceware
+	@env GOOS=windows go build . \
+		&& zip ./pkg/diceware_windows_$(GOARCH).zip diceware-cli.exe \
+		&& rm diceware-cli.exe
 
 build_linux:
-	@GOOS=linux go build -o ./pkg/diceware . \
-		&& zip ./pkg/diceware_linux_$(GOARCH).zip ./pkg/diceware \
-		&& rm ./pkg/diceware
-
-build_macOS:
-	@go build -o ./pkg/diceware . \
-		&& zip ./pkg/diceware_macOS_$(GOARCH).zip ./pkg/diceware \
-		&& rm ./pkg/diceware
+	@env GOOS=linux go build . \
+		&& zip ./pkg/diceware_linux_$(GOARCH).zip diceware-cli \
+		&& rm diceware-cli

README.md

@@ -5,12 +5,26 @@ A tool that generates strong passwords based on easily memorable words that are
 
 ## Usage
 ```
-diceware generate [flags]
+Usage:
+  diceware generate [flags]
 
 Flags:
-  -c, --copy          pbcopy password
-  -h, --help          help for generate
-      --hide          pbcopy and hide password. Password WON'T be printed out
-  -l, --lang string   password language (default "en")
-  -s, --size int32    the amount words the password will have (default 6)
-```
+  -c, --copy               pbcopy password
+  -h, --help               help for generate
+      --hide               pbcopy and hide password. Password WON'T be printed out
+  -l, --lang string        password language
+                            available langs: en, pt (default "en")
+      --separator string   character that separates the words,
+                            to remove reparator use --separator=none (default " ")
+  -s, --size int32         the amount words the password will have (default 6)
+```
+
+## Installation Guide
+
+Unzip the zip files to find the binaries inside the `pkg` folder.
+
+On Unix systems, place the binaries in your favorite folder, but to access it from the command-line, you will need to add the folder path somewhere on your **PATH** variable. 
+
+See [this page](https://stackoverflow.com/questions/14637979/how-to-permanently-set-path-on-linux-unix) for instructions on setting the **PATH** on Linux and Mac. [This page](https://stackoverflow.com/questions/1618280/where-can-i-set-path-to-make-exe-on-windows) contains instructions for setting the **PATH** on Windows.
+
+If you face some difficulty during the installation, please let me know by reporting an issue in this repository.

cmd/root.go

@@ -18,8 +18,8 @@ var rootCmd = &cobra.Command{
 }
 
 func Execute() {
-	generateCmd.Flags().StringVarP(&generateConfig.Lang, "lang", "l", "en", "password language")
-	generateCmd.Flags().StringVar(&generateConfig.Separator, "separator", " ", "character that separates the words")
+	generateCmd.Flags().StringVarP(&generateConfig.Lang, "lang", "l", "en", "password language\n available langs: en, pt")
+	generateCmd.Flags().StringVar(&generateConfig.Separator, "separator", " ", "character that separates the words,\n to remove reparator use --separator=none")
 	generateCmd.Flags().Int32VarP(&generateConfig.Size, "size", "s", 6, "the amount words the password will have")
 	generateCmd.Flags().BoolVarP(&generateConfig.Pbcopy, "copy", "c", false, "pbcopy password")
 	generateCmd.Flags().BoolVar(&generateConfig.Hide, "hide", false, "pbcopy and hide password. Password WON'T be printed out")