Update J2ObjC.podspec
Update J2ObjC.podspec

Updated homepage, version. Added libz to libraries, and added jsr305 library.

goodow/j2objc,jefflovejapan/j2objc,halfhp/j2objc,jefflovejapan/j2objc,halfhp/j2objc,goodow/j2objc,halfhp/j2objc,jefflovejapan/j2objc,halfhp/j2objc,jefflovejapan/j2objc,halfhp/j2objc,goodow/j2objc,halfhp/j2objc,jefflovejapan/j2objc,jefflovejapan/j2objc,goodow/j2objc,goodow/j2objc,goodow/j2objc