Fixed travis build && update README.md

Author: sea5kg

.gitignore

@@ -1,5 +1,6 @@
 tmp/*
 wsjcpp-core
+.wsjcpp/*
 .vscode/*
 *.log
 

.travis.yml

@@ -19,4 +19,4 @@ script:
   - ./build_simple.sh
   - cd unit-tests.wsjcpp
   - ./build_simple.sh
-  - ./run_unit-tests
+  - ./run_unit-tests.sh

.wsjcpp/.gitignore

@@ -6,6 +6,33 @@ Basic utils for wsjcpp
 
 *included helpers functions, logger and etc.*
 
-## List of function:
+## Integrate to your project
 
-* createUuid
+```
+$ wsjcpp install https://github.com/wsjcpp/wsjcpp-core:master
+```
+
+Or include files:
+
+* `src/wsjcpp_core.h`
+* `src/wsjcpp_core.cpp`
+
+## List of static function:
+
+### createUUID
+
+generation uuid but before you need call once `WSJCppCore::initRandom();` (for example in main function)
+
+```
+std::string sUuid = WSJCppCore::createUuid();
+```
+
+### readTextFile
+
+Reading text files to std::string
+```
+std::string sContent;
+if (WSJCppCore::readTextFile("./file.txt", sContent)) {
+    std::cout << sContent;
+}
+```