Add Ultisnips snippets

my_snippets/markdown.snippets

@@ -0,0 +1,17 @@
+snippet kbd "HTML kbd tag"
+<kbd>${1:KEY}</kbd>$0
+endsnippet
+
+snippet head "Markdown header" b
+---
+title: "$1"
+date: `!v strftime("%Y-%m-%d %H:%M:%S%z")`
+tags: [$3]
+categories: [$4]
+---
+$0
+endsnippet
+
+snippet more "HTML more tag"
+<!--more-->
+endsnippet

my_snippets/python.snippets

@@ -0,0 +1,14 @@
+snippet head "Python source file header" b
+"""
+Description: $1
+Author: Jie-dong Hao
+Date: `!v strftime("%Y-%m-%d %H:%M:%S%z")`
+Update: `!v strftime("%Y-%m-%d %H:%M:%S%z")`
+"""
+$0
+endsnippet
+
+snippet print "Print value of some variable"
+print("$1".format($2))
+$0
+endsnippet

my_snippets/tex.snippets

@@ -0,0 +1,3 @@
+snippet frac "Math fractions"
+\frac{${1:NUM}}{${2:DEN}} $0
+endsnippet