Add some more snippets for beamer

snippets/latex-mode/col

@@ -0,0 +1,11 @@
+# name: twocolumns
+# key: col
+# --
+\begin{columns}
+ \begin{column}{0.5\textwidth}
+  $0
+ \end{column}
+ \begin{column}{0.5\textwidth}
+  
+ \end{column}
+\end{columns}

snippets/latex-mode/frnt

@@ -0,0 +1,6 @@
+# name: frame-notitle
+# key: frnt
+# --
+\begin{frame}
+  $0
+\end{frame}

snippets/latex-mode/grh

@@ -0,0 +1,4 @@
+# name: graphics-height
+# key: grh
+# --
+\includegraphics[height=0.9\textheight]{$0}

snippets/latex-mode/grw

@@ -0,0 +1,4 @@
+# name: graphics-width
+# key: grw
+# --
+\includegraphics[width=\textwidth]{$0}