Add first tests

test/tests.vader

@@ -0,0 +1,23 @@
+Before (Check :Startify):
+  Startify
+
+Execute (Check options):
+  AssertEqual 'startify', &filetype
+  AssertEqual 'wipe',     &bufhidden
+  AssertEqual 'nofile',   &buftype
+  AssertEqual 0,          &buflisted
+  AssertEqual 0,          &cursorcolumn
+  AssertEqual 0,          &cursorline
+  AssertEqual 0,          &list
+  AssertEqual 0,          &number
+  AssertEqual 0,          &swapfile
+
+Do (open new buffer in insert mode with 'i'):
+  ifoo
+Expect (only "foo"):
+  foo
+
+Do (open new buffer in normal mode with 'e'):
+  eibar
+Expect (only "bar"):
+  bar