scripted-diff: Remove trailing whitespaces

-BEGIN VERIFY SCRIPT-

sed --in-place'' --regexp-extended 's/[[:space:]]+$//g' $(git grep -I --files-with-matches --extended-regexp '[[:space:]]+$' -- src test  ':!*.svg' ':!src/crypto/sha256_sse4*' ':!src/leveldb' ':!src/qt/locale' ':!src/secp256k1' ':!src/univalue')

-END VERIFY SCRIPT-

test/README.md

@@ -5,7 +5,7 @@ etc.
 
 There are currently two sets of tests in this directory:
 
-- [functional](/test/functional) which test the functionality of 
+- [functional](/test/functional) which test the functionality of
 bitcoind and bitcoin-qt by interacting with them through the RPC and P2P
 interfaces.
 - [util](/test/util) which tests the bitcoin utilities, currently only
@@ -177,11 +177,11 @@ Note: gdb attach step may require `sudo`
 
 ### Util tests
 
-Util tests can be run locally by running `test/util/bitcoin-util-test.py`. 
+Util tests can be run locally by running `test/util/bitcoin-util-test.py`.
 Use the `-v` option for verbose output.
 
 # Writing functional tests
 
 You are encouraged to write functional tests for new or existing features.
-Further information about the functional test framework and individual 
+Further information about the functional test framework and individual
 tests is found in [test/functional](/test/functional).