Reword a bit docs and make more consistent and clear

Signed-off-by: Alexander Nesterenko <nestorf250@gmail.com>

cmd/helm/init.go

@@ -36,9 +36,10 @@ import (
 )
 
 const initDesc = `
-This command sets up local configuration in $HELM_HOME (defaults to, based on system to:
-$XDG_CONFIG_DIR/helm (default ~/.config/helm) on Linux, %APPDATA%\helm on Windows and
-$HOME/Library/Preferences on OSX.
+This command sets up local configuration in $HELM_HOME. It defaults to
+ - $XDG_CONFIG_HOME/helm (default $HOME/.config/helm) on Linux;
+ - %APPDATA%\helm on Windows and;
+ - $HOME/Library/Preferences on OSX.
 `
 
 const (

cmd/helm/root.go

@@ -46,12 +46,12 @@ Common actions from this point include:
 
 Environment:
   $HELM_HOME          set an alternative location for Helm files. By default, these are stored in
-                      "$XDG_CONFIG_DIR/helm" (typically ~/.config/helm) on Linux,
+                      "$XDG_CONFIG_HOME/helm" (typically "$HOME/.config/helm") on Linux,
                       "%APPDATA%\helm" on Windows and "$HOME/Library/Preferences" on OSX.
-                      NOTE: if you have old-style "~/.helm" directory, it will be used.
+                      NOTE: if there is old-style "$HOME/.helm" directory, it will be used.
   $HELM_DRIVER        set the backend storage driver. Values are: configmap, secret, memory
   $HELM_NO_PLUGINS    disable plugins. Set HELM_NO_PLUGINS=1 to disable plugins.
-  $KUBECONFIG         set an alternative Kubernetes configuration file (default "~/.kube/config")
+  $KUBECONFIG         set an alternative Kubernetes configuration file (default "$HOME/.kube/config")
 `
 
 // TODO: 'c helm.Interface' is deprecated in favor of actionConfig

pkg/helm/helmpath/default_home_dir.go

@@ -25,11 +25,11 @@ import (
 
 // New default helm home, with different paths for different OS:
 //	- %APPDATA%\helm on Windows
-//	- ~/Library/Preferences/helm on OSX
-//  - $XDG_CONFIG_DIR/helm (typically ~/.config/helm for linux)
+//	- $HOME/Library/Preferences/helm on OSX
+//  - $kXDG_CONFIG_HOME/helm (typically $HOME/.config/helm for Linux)
 var defaultHelmHome = xdg.App{Name: "helm"}.ConfigPath("")
 
-// Old default helm home, it's old good ~/.helm
+// Old default helm home, it's old good $HELM/.helm
 var oldDefaultHelmHome = filepath.Join(homedir.HomeDir(), ".helm")
 
 type DefaultConfigHomePath interface {
@@ -44,7 +44,7 @@ func (FSConfigHomePath) xdgHomeExists() bool {
 	return DirExists(defaultHelmHome)
 }
 
-// Checks whether ~/.helm exists
+// Checks whether $HOME/.helm exists
 func (FSConfigHomePath) basicHomeExists() bool {
 	return DirExists(oldDefaultHelmHome)
 }