continuous-integration.md

 Continuous integration is this guide is based on Gitlab CI. Each step of this setup, except of the first one, is optional - implement only what you need.
 
 1.  **Gitlab CI.**
+To setup Gitlab CI you need to add .gitlab-ci.yml file to the root of project's source. It should look like this:
+```stages:
+  - analyze
+  - test
+  - crashlytics
+
+analyzation:
+  stage: analyze
+  script:
+    - ./analyze.sh
+  except:
+    - triggers
+
+testing:
+  stage: test
+  script:
+    - xcodebuild -workspace MyWorkspace.xcworkspace -scheme MyScheme -configuration MyConfiguration -destination "platform=iOS Simulator,name=iPhone 7,OS=10.3" build test | xcpretty
+  except:
+    - triggers
+
+crashlytics_build:
+  stage: crashlytics
+  script:
+    - fastlane ios release_dev
+  only:
+    - develop
+  except:
+  - triggers```
+Add only stages you need.
+
+2.  **Analyzation Stage**
+To setup analyzation you need to do the following:
+*  Properly configure the project for Release configuration, especially enable almost all warnings:
+- Set `Treat Warnings as Errors` to Yes.
+- Set `Documentation Comments` to Yes.
+- Set `Empty Loop Bodies` to Yes.
+- Set `Four Character Literals` to Yes.
+- Set `Hidden Local Variables` to Yes.
+- Set `Implicit Boolean Conversions` to Yes.
+- Set `Implicit Constant Conversions` to Yes.
+- Set `Implicit Conversion to 32 Bit type` to Yes.
+- Set `Implicit Enum Conversions` to Yes.
+- Set `Implicit Integer to Pointer Conversion` to Yes.
+- Set `Implicit Signedness Conversions` to Yes.
+- Set `Infinite Recursion` to Yes.
+- Set `Initializer Not Fully Bracketed` to Yes.
+- Set `Mismatched Return Type` to Yes (treat as error).
+- Set `Missing Fields in Structure Initializers` to Yes.
+- Set `Missing Function Prototypes` to Yes.
+- Set `Missing Newline At End of File` to Yes.
+- Set `Out-of-Range Enum Assignments` to Yes.
+- Set `Sign Comparison` to Yes.
+- Set `Suspicious Implicit Conversions` to Yes.
+- Set `Uninitialized Variables` to Yes (Aggressive).
+- Set `Unknown Pragma` to Yes.
+- Set `Unreachable Code` to Yes.
+- Set `Unused Functions` to Yes.
+- Set `Unused Labels` to Yes.
+- Set `Unused Parameters` to Yes.
+- Set `Unused Variables` to Yes.
+- Set `Suspicious Moves` to Yes.
+- Set `Direct Usage of 'isa'` to Yes (treat as error).
+- Set `Duplicate Method Definitions` to Yes.
+- Set `Implicit Atomic Objective-C Properties` to Yes.
+- Set `Overriding Deprecated Objective-C Methods` to Yes.
+- Set `Strict Selector Matching` to Yes.
+- Set `Undeclared Selector` to Yes.
+- Set `Unintentional Root Class` to Yes (treat as error).
+- Set `Implicit Ownership Types on our parameters` to Yes.
+- Set `Implicit Retain of 'self' within blocks` to Yes.
+- Set `Repeatedly using a __weak reference` to Yes.
+- Set `Misuse of 'nonnull'` to Yes (Aggressive).
+- Set `Missing Localizability` to Yes.
+- Set `Floating Point Value used as Loop Counter` to Yes.
+- Set `Use of 'rand' functions` to Yes.
+- Set `Use of 'strcpy' and 'strcat'` to Yes.
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