Nye filer IO, uke 9

foreksempel/src/main/java/uke9/iostreams.md

...mpel/src/main/java/uke9/iostreams/BrukBufferedReader.java

foreksempel/src/main/java/uke9/iostreams/BrukFileReader.java

...l/src/main/java/uke9/iostreams/BrukInputStreamReader.java

...ksempel/src/main/java/uke9/iostreams/BrukPrintStream.java

foreksempel/src/main/java/uke9/iostreams/Dyr.java

foreksempel/src/main/java/uke9/iostreams/Dyrehage.java

foreksempel/src/main/java/uke9/iostreams/IoLambda.java

foreksempel/src/main/java/uke9/iostreams/test.txt

foreksempel/src/main/java/uke9/streams/Pipeline.java