Make resin ssh work in Windows cmd.exe

Signed-off-by: Juan Cruz Viotti <jviottidc@gmail.com>

build/actions/ssh.js

@@ -23,8 +23,8 @@ limitations under the License.
     os = require('os');
     if (os.platform() === 'win32') {
       return {
-        program: 'sh',
-        args: ['-c', command]
+        program: 'cmd.exe',
+        args: ['/s', '/c', command]
       };
     } else {
       return {

lib/actions/ssh.coffee

@@ -14,14 +14,20 @@ See the License for the specific language governing permissions and
 limitations under the License.
 ###
 
+# TODO: A function to reliably execute a command
+# in all supported operating systems, including
+# different Windows environments like `cmd.exe`
+# and `Cygwin` should be encapsulated in a
+# re-usable package.
+# This is literally copy-pasted from the `resin-sync`
+# module.
 getSubShellCommand = (command) ->
 	os = require('os')
 
-	# Assume Cygwin
 	if os.platform() is 'win32'
 		return {
-			program: 'sh'
-			args: [ '-c', command ]
+			program: 'cmd.exe'
+			args: [ '/s', '/c', command ]
 		}
 	else
 		return {