Update readme

.gitignore

@@ -25,6 +25,7 @@ local.properties
 
 # Gradle
 .gradle/
+gradle/
 gradlew
 gradlew.bat
 

README.md

@@ -22,48 +22,48 @@ Block all messages starting with `the` and ending with `game`:
 ## Requirements
 
 - A rooted phone running Android 4.4 KitKat or newer
-- [Xposed framework](http://forum.xda-developers.com/xposed/xposed-installer-versions-changelog-t2714053)
-  ([Lollipop/Marshmallow version](http://forum.xda-developers.com/showthread.php?t=3034811))
+- [Xposed framework](http://forum.xda-developers.com/xposed)
 
 ## Note
 
-NekoSMS was designed for devices running stock Android. If your ROM has made 
-significant changes to the way Android internally handles SMS messages, this 
+NekoSMS was designed for devices running stock Android. If your ROM has made
+significant changes to the way Android internally handles SMS messages, this
 app might not work.
 
 ## License
 
-All code is licensed under [GPLv3](http://www.gnu.org/licenses/gpl-3.0.txt). 
-Images are copyright their respective owners.
+All code is licensed under [GPLv3](http://www.gnu.org/licenses/gpl-3.0.txt).
+Icons are from Google's [material icons library](https://design.google.com/icons/).
 
 ## Q&A
 
 ### Why is it called NekoSMS?
 
-No reason in particular. I wanted a name that had "SMS" in it, and "neko" was the 
+No reason in particular. I wanted a name that had "SMS" in it, and "neko" was the
 first word that popped into my head. Hence, NekoSMS.
 
-### Why does this app require root/Xposed?
+### Why does this app require Xposed?
 
 [Starting from Android 4.4, only the default SMS app has the ability to intercept SMS messages]
 (http://android-developers.blogspot.in/2013/10/getting-your-sms-apps-ready-for-kitkat.html).
-In order to bypass this restriction, code must be modified at the OS level, which requires root.
+In order to bypass this restriction, code must be modified at the OS level.
 
 ### Does NekoSMS work with (insert SMS app here)?
 
-As long as your ROM supports it, yes. There is no app-specific SMS blocking 
+As long as your ROM supports it, yes. There is no app-specific SMS blocking
 code, so if it works with one SMS app, it will work with them all.
 
 ### How does it work? (for nerds)
 
-It hooks the internal Android class, `com.android.internal.telephony.InboundSmsHandler`. 
-This class is responsible for taking the raw SMS data received by the phone and 
-dispatching it to the default SMS app, then broadcasting it to all apps capable of 
+It hooks the internal Android class, [`com.android.internal.telephony.InboundSmsHandler`]
+(https://android.googlesource.com/platform/frameworks/opt/telephony/+/master/src/java/com/android/internal/telephony/InboundSmsHandler.java).
+This class is responsible for taking the raw SMS data received by the phone and
+dispatching it to the default SMS app, then broadcasting it to all apps capable of
 reading SMS messages.
 
-Essentially, this app intercepts the data right before it is sent to the default 
-SMS app, then runs it through the user-defined filters. If the message matches 
-a filter, it is discarded and no broadcasts are sent.
+Essentially, this app intercepts the data right before it is sent to the default
+SMS app, then runs it through the user-defined filters. If the message matches
+a filter, the broadcast is dropped.
 
 ### How does it work? (for non-nerds)