Fix appveyor build

appveyor.yml

@@ -0,0 +1,11 @@
+version: 1.0.{build}
+before_build:
+- cmd: >-
+    git submodule update --init --recursive
+
+    dotnet restore
+
+    cd src/NadekoBot/
+build_script:
+- cmd: >-
+    dotnet build

global.json

@@ -1,5 +1,5 @@
 {
-  "projects": [ "discord.net/src/Discord.Net", "discord.net/src/Discord.Net.Commands", "src" ],
+  "projects": [ "discord.net/src", "src" ],
   "sdk": {
     "version": "1.0.0-preview2-003121"
   }