Converted ShatteredPD to Build from Gradle

Major Changes:
- Shattered now builds effortlessly either from gradle CLI or android studio
- Much better dependency management through gradle (although it's not really used atm)
- Separate PD-classes repo is now SPD-classes module within main repo

.gitignore

@@ -1,11 +1,5 @@
-.classpath
-.project
-project.properties
-proguard.cfg
-
 # Built application files
 *.apk
-*.ap_
 
 # Files for the Dalvik VM
 *.dex
@@ -13,10 +7,6 @@ proguard.cfg
 # Java class files
 *.class
 
-# Generated files
-bin/
-gen/
-
 # Gradle files
 .gradle/
 build/
@@ -24,9 +14,6 @@ build/
 # Local configuration file (sdk path, etc)
 local.properties
 
-# Proguard folder generated by Eclipse
-proguard/
-
 #intellij project files
 *.iml
-*.idea
+*.idea