Change rootCommands to fit Android API level 24
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 5d19981..fbb6828 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -37,7 +37,7 @@
     <ConfirmationsSetting value="0" id="Add" />
     <ConfirmationsSetting value="0" id="Remove" />
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" default="true" assert-keyword="true" jdk-15="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" assert-keyword="true" jdk-15="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/app/build.gradle b/app/build.gradle
index 8462e2d..ba0b5bd 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -18,7 +18,7 @@
 
     defaultConfig {
         applicationId "masquerade.substratum"
-        minSdkVersion 23
+        minSdkVersion 21
         targetSdkVersion 23
         versionCode 12
         versionName "twelve"
diff --git a/app/src/main/java/masquerade/substratum/util/Root.java b/app/src/main/java/masquerade/substratum/util/Root.java
index ccda162..6e398e1 100644
--- a/app/src/main/java/masquerade/substratum/util/Root.java
+++ b/app/src/main/java/masquerade/substratum/util/Root.java
@@ -34,8 +34,8 @@
     }
 
     public static void mount(boolean writeable, String mountpoint) {
-        runCommand(writeable ? "mount -o remount,rw " + mountpoint + " " + mountpoint :
-                "mount -o remount,ro " + mountpoint + " " + mountpoint);
+        runCommand(writeable ? "mount -o rw,remount " + mountpoint + " " + mountpoint :
+                "mount -o ro,remount " + mountpoint + " " + mountpoint);
     }
 
     public static void closeSU() {