No architectures to compile for (ONLY_ACTIVE_ARCH=YES, active arch=i386, VALID_ARCHS=armv7 armv6).

If you are using Xcode 4 and having the problem "No architectures to compile for (ONLY_ACTIVE_ARCH=YES, active arch=i386, VALID_ARCHS=armv7 armv6). ",

Add i386 to Valid Architectures

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