Add expect to have_content snippet

Author: Xiaohong-Deng

Snippets/expect-to-have_content.sublime-snippet

@@ -0,0 +1,6 @@
+<snippet>
+    <content><![CDATA[expect(${1:subject}).to have_content(${2:content})$0]]></content>
+    <tabTrigger>exphc</tabTrigger>
+    <scope>source.ruby.rspec</scope>
+    <description>expect(object).to have_content(content)</description>
+</snippet>