Add license and update Makefile

LICENSE

@@ -0,0 +1,19 @@
+Copyright (c) 2015 Kevin Lin
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

Makefile

@@ -1,3 +1,4 @@
 install:
 	sudo pip install -r requirements.txt
 	sudo cp cloudflare-ddns /usr/local/bin/cloudflare-ddns
+	sudo chmod +x /usr/local/bin/cloudflare-ddns

README.md

@@ -8,7 +8,6 @@ Installation is fairly straightforward. Note that you should install the script
 ```bash
 git clone https://github.com/LINKIWI/cloudflare-ddns-client.git
 cd cloudflare-ddns-client
-sudo chmod +x cloudflare-ddns
 sudo make install
 ```
 This will install necessary Python libraries and place a copy of the `cloudflare-ddns` executable in `/usr/local/bin`. You can verify access to the executable with `which cloudflare-ddns`.