I followed the steps to integrate AdMob for my iOS App, everything is ok, but i have one fatal error (so i guess something is not ok)

Here is the message: 

```
Ld /Library/Developer/Xcode/DerivedData/Liga_Zon_Sagres_Companion-fjlwctxjtriqrbgpjiscdoodhcgr/Build/Products/Debug-iphonesimulator/Liga\ Zon\ Sagres\ Companion.app/Liga\ Zon\ Sagres\ Companion normal x86_64
    cd "/Users/bertobettencourt/Desktop/LIVE RELEASES/Liga Zon Sagres (iOS)/1.30"
    export IPHONEOS_DEPLOYMENT_TARGET=6.0
    export PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator7.1.sdk -L/Users/bertobettencourt/Library/Developer/Xcode/DerivedData/Liga_Zon_Sagres_Companion-fjlwctxjtriqrbgpjiscdoodhcgr/Build/Products/Debug-iphonesimulator -L/Users/bertobettencourt/Desktop/LIVE\ RELEASES/Liga\ Zon\ Sagres\ (iOS)/1.30/Liga\ Zon\ Sagres\ Companion/Flurry\ iPhone\ SDK\ viPhone\ 4/Flurry-iOS-4.4.0/Flurry -L/Users/bertobettencourt/Desktop/LIVE\ RELEASES/Liga\ Zon\ Sagres\ (iOS)/1.30/Liga\ Zon\ Sagres\ Companion/Flurry\ iPhone\ SDK\ viPhone\ 4/Flurry-iOS-4.4.0/FlurryAds -F/Users/bertobettencourt/Library/Developer/Xcode/DerivedData/Liga_Zon_Sagres_Companion-fjlwctxjtriqrbgpjiscdoodhcgr/Build/Products/Debug-iphonesimulator -filelist /Users/bertobettencourt/Library/Developer/Xcode/DerivedData/Liga_Zon_Sagres_Companion-fjlwctxjtriqrbgpjiscdoodhcgr/Build/Intermediates/Liga\ Zon\ Sagres\ Companion.build/Debug-iphonesimulator/Liga\ Zon\ Sagres\ Companion.build/Objects-normal/x86_64/Liga\ Zon\ Sagres\ Companion.LinkFileList -Xlinker -objc_abi_version -Xlinker 2 -ObjC -fobjc-arc -fobjc-link-runtime -Xlinker -no_implicit_dylibs -mios-simulator-version-min=6.0 -framework AudioToolbox -framework MessageUI -lFlurry_4.4.0 -framework SystemConfiguration -framework StoreKit -framework CoreData -framework AdSupport -lFlurryAds_4.4.0 -lGoogleAdMobAds -framework iAd -framework CoreGraphics -framework UIKit -framework Foundation -Xlinker -dependency_info -Xlinker /Users/bertobettencourt/Library/Developer/Xcode/DerivedData/Liga_Zon_Sagres_Companion-fjlwctxjtriqrbgpjiscdoodhcgr/Build/Intermediates/Liga\ Zon\ Sagres\ Companion.build/Debug-iphonesimulator/Liga\ Zon\ Sagres\ Companion.build/Objects-normal/x86_64/Liga\ Zon\ Sagres\ Companion_dependency_info.dat -o /Users/bertobettencourt/Library/Developer/Xcode/DerivedData/Liga_Zon_Sagres_Companion-fjlwctxjtriqrbgpjiscdoodhcgr/Build/Products/Debug-iphonesimulator/Liga\ Zon\ Sagres\ Companion.app/Liga\ Zon\ Sagres\ Companion

ld: library not found for -lGoogleAdMobAds
clang: error: linker command failed with exit code 1 (use -v to see invocation)

```

I'm new to iOS i do not know what is causing this, it seems i am missing the library, any idea where i can find it and how do i fix the problem?

Thank you.