Fixed singleton scala
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#	modified:   src/main/scala/sample/design_pattern/Singleton.scala
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#	src/main/c/State
#	src/main/scala/sample/design_pattern/ChainOfResponsibility.scala
ChainOfResponsibility.scala

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#	new file:   src/main/scala/sample/design_pattern/ChainOfResponsibility.scala
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#	src/main/c/State