fixed wget command in readme

github uses a wildcard certificate which is not accepted by wget

README.textile

@@ -8,7 +8,7 @@ h2. Setup
 
 h3. The automatic installer... (do you trust me?)
 
-@wget https://github.com/robbyrussell/oh-my-zsh/raw/master/tools/install.sh -O - | sh@
+@wget --no-check-certificate https://github.com/robbyrussell/oh-my-zsh/raw/master/tools/install.sh -O - | sh@
 
 h3. The manual way
 
@@ -66,4 +66,4 @@ I'm far from being a zsh-expert and suspect there are many ways to improve. If y
 
 h3. Send us your theme!
 
-I'm hoping to collect a bunch of themes for our command prompts. You can see existing ones in the @themes/@ directory.
\ No newline at end of file
+I'm hoping to collect a bunch of themes for our command prompts. You can see existing ones in the @themes/@ directory.