added svndiff function to use colordiff

bash_aliases

@@ -103,5 +103,9 @@ function git-config-joshs()
     git config --global core.excludesfile ${HOME}/.gitignore
     git config --global core.pager 'less -FRXi'
 }
+function svndiff()
+{
+    svn diff "$@" | colordiff
+}
 
 # local