Extended the NSFW's README with some use cases and regex examples - typo correction

diff --git a/nsfw/README b/nsfw/README
index c65394a8cffefae5266e6565efd6f17241cf1cbd..e42c2128c7e05e0770663746a2035be8113a2236 100755 (executable)
--- a/nsfw/README
+++ b/nsfw/README
@@ -64,7 +64,7 @@ This can be prevented by
 
        /\badvent\b/
 
-The first part if the regex above
+The first part of the regex above
 
        (?<!the )