Bump version to next alpha (#1675)

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "vscode-docker",
-  "version": "1.0.0",
+  "version": "1.0.1-alpha",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {

package.json

@@ -1,6 +1,6 @@
 {
     "name": "vscode-docker",
-    "version": "1.0.0",
+    "version": "1.0.1-alpha",
     "publisher": "ms-azuretools",
     "displayName": "Docker",
     "description": "Makes it easy to create, manage, and debug containerized applications.",