Add/change READMEs (#24)

diff --git a/http/get_compressed/README.md b/http/get_compressed/README.md
new file mode 100644
index 0000000..dde6e20
--- /dev/null
+++ b/http/get_compressed/README.md
@@ -0,0 +1,22 @@
+<!---
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+
+# HTTP GET Arrow Data: Compression Examples
+
+This directory contains examples of HTTP servers/clients that transmit/receive data in the Arrow IPC streaming format and use compression (in various ways) to reduce the size of the transmitted data.
diff --git a/http/get_multipart/README.md b/http/get_multipart/README.md
index 5a9b337..662f38c 100644
--- a/http/get_multipart/README.md
+++ b/http/get_multipart/README.md
@@ -19,4 +19,4 @@
 
 # HTTP GET Arrow Data: Multipart Examples
 
-This directory contains examples of HTTP clients/servers that send/receive a multipart response (`Content-Type: multipart/mixed`) containing JSON data (`Content-Type: application/json`) and Arrow IPC stream data (`Content-Type: application/vnd.apache.arrow.stream`).
+This directory contains examples of HTTP servers/clients that send/receive a multipart response (`Content-Type: multipart/mixed`) containing JSON data (`Content-Type: application/json`) and Arrow IPC stream data (`Content-Type: application/vnd.apache.arrow.stream`).
diff --git a/http/get_range/README.md b/http/get_range/README.md
index a0c8d40..0902500 100644
--- a/http/get_range/README.md
+++ b/http/get_range/README.md
@@ -19,4 +19,4 @@
 
 # HTTP GET Arrow Data: Range Request Examples
 
-This directory contains examples of HTTP clients/servers that send/receive data of known size (`Content-Length`) in the Arrow IPC streaming format and support range requests (`Accept-Range: bytes`).
+This directory contains examples of HTTP servers/clients that send/receive data of known size (`Content-Length`) in the Arrow IPC streaming format and support range requests (`Accept-Range: bytes`).