Added gitignore and Devguide

.gitignore

@@ -0,0 +1,150 @@
+# An example global gitignore file
+#
+# Place a copy if this at ~/.gitignore_global
+# Run `git config --global core.excludesfile ~/.gitignore_global`
+
+# Compiled source #
+###################
+*.com
+*.class
+*.dll
+*.exe
+*.o
+*.so
+*.pyc
+*.pyo
+
+# Packages #
+############
+# it's better to unpack these files and commit the raw source
+# git has its own built in compression methods
+*.7z
+*.dmg
+*.gz
+*.iso
+*.jar
+*.rar
+*.tar
+*.zip
+*.msi
+
+# Logs and databases #
+######################
+*.log
+*.sql
+*.sqlite
+
+# OS generated files #
+######################
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+desktop.ini
+
+# Temporary files #
+###################
+*.bak
+*.swp
+*.swo
+*~
+*#
+
+# IDE files #
+###########################################################################
+.vscode
+.idea
+.iml
+*.sublime-workspace
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+# User-specific stuff
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+# Generated files
+.idea/**/contentModel.xml
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+# Gradle
+.idea/**/gradle.xml
+.idea/**/libraries
+# Gradle and Maven with auto-import
+# When using Gradle or Maven with auto-import, you should exclude module files,
+# since they will be recreated, and may cause churn.  Uncomment if using
+# auto-import.
+# .idea/modules.xml
+# .idea/*.iml
+# .idea/modules
+# CMake
+cmake-build-*/
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+# File-based project format
+*.iws
+# IntelliJ
+out/
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+# JIRA plugin
+atlassian-ide-plugin.xml
+# Cursive Clojure plugin
+.idea/replstate.xml
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+# Editor-based Rest Client
+.idea/httpRequests
+# Android studio 3.1+ serialized cache file
+.idea/caches/build_file_checksums.ser
+###############################################################################################
+
+####### c++
+# Prerequisites
+*.d
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+# Precompiled Headers
+*.gch
+*.pch
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+# Fortran module files
+*.mod
+*.smod
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+# Executables
+*.exe
+*.out
+*.app
+##############################
+
+
+#################### BUILD FILES
+build/*
+!build/build.xml

Development Guidelines.md

@@ -0,0 +1,30 @@
+1.No "using namespace std;"
+
+2.Clearly declare "private" inside of class. For example:
+
+use 
+```c++
+class item{
+    private:
+    int price;
+    public:
+    getPrice();
+}
+```
+
+instead of class
+ 
+```c++
+class item{
+    int price;
+    public:
+    getPrice();
+}
+```
+
+
+3.Declare inheritance type(public, private, protected) when using inheritance.
+
+4.If not finished with code, add a TODO as comments.
+
+5.Add comments to explain what you want to do.