docs: Document webinstall (#152)

Author: jcs090218

docs/content/en/Getting Started/Install Eask.md

@@ -19,6 +19,23 @@ where you don’t have a privileged account.
 Ideally, you should install it somewhere in your `PATH` for easy use. `/usr/local/bin`
 is the most probable location.
 
+### Using Shell
+
+Eask's [webinstall](https://github.com/emacs-eask/cli/tree/master/webinstall) 
+provides convenience scripts to download and install the binary.
+
+#### macOS and Linux
+
+```
+curl -fsSL https://raw.githubusercontent.com/emacs-eask/cli/master/webinstall/install.sh | sh
+```
+
+#### Windows
+
+```
+curl.exe -fsSL https://raw.githubusercontent.com/emacs-eask/cli/master/webinstall/install.bat | cmd /Q
+```
+
 ### npm
 
 If you have [npm](https://www.npmjs.com/) installed on your machine, you can

webinstall/install.sh

@@ -24,8 +24,6 @@
 
 set -e
 
-$URL=https://github.com/emacs-eask/binaries/raw/master/linux-x64.zip
-
 if [ "$OS" = "Windows_NT" ]; then
   target="win-x64"
 else
@@ -47,7 +45,7 @@ zip=$eask_bin_dir/eask.zip
 
 mkdir -p $eask_bin_dir
 
-curl -fsSL eask_uri -o $zip
+curl -fsSL $eask_uri -o $zip
 
 tar -xf $zip -C $eask_bin_dir