add align tex snippet

vim/UltiSnips/tex.snippets

@@ -61,6 +61,20 @@ snippet eq*
 \end{equation*}
 endsnippet
 
+# align
+snippet align
+\begin{align}
+	${0} \label{eq:${1}}
+\end{align}
+endsnippet
+
+# align
+snippet align*
+\begin{align*}
+	${0}
+\end{align*}
+endsnippet
+
 # Equation array
 snippet eqnarray
 \begin{eqnarray}