Additional install instructions for Ubuntu and PopOS (#182)

* Additional install instructions for Ubuntu and PopOS
* Small change on replication.md page (typo)
diff --git a/README.md b/README.md
index cb265f7..66bcac9 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,8 @@
 
 Ruby is required to use Bundler so first make sure you have Ruby on your machine.  If you are using
 an OS packaged version of Ruby, you will have to also install the ruby-dev (Ubuntu) or
-ruby-devel (Fedora) package as well.
+ruby-devel (Fedora) package as well. Depending on your OS, you may also need other packages, such as
+ruby-full, make, gcc, nodejs, build-essentials, or patch.
 
 With Ruby installed on your machine, you can install [Bundler] using the command below:
 
@@ -54,13 +55,13 @@
 
 ## Updating property documentation
 
-Building Accumulo  generates `properties.md` and `client-properties.md`.  To
+Building Accumulo  generates `server-properties.md` and `client-properties.md`.  To
 regenerate these, do the following.
 
 ```
 cd <accumulo source dir>
 mvn package -DskipTests
-cp ./core/target/generated-docs/properties.md <accumulo website source>/_docs-2/administration
+cp ./core/target/generated-docs/server-properties.md <accumulo website source>/_docs-2/administration
 cp ./core/target/generated-docs/client-properties.md <accumulo website source>/_docs-2/administration
 ```
 
diff --git a/_docs-2/administration/replication.md b/_docs-2/administration/replication.md
index 3bb8ff5..b849cd0 100644
--- a/_docs-2/administration/replication.md
+++ b/_docs-2/administration/replication.md
@@ -30,7 +30,7 @@
 the system wants to send.
 
 Data is replicated by using the Write-Ahead logs (WAL) that each TabletServer is
-already maintaining. TabletServers records which WALs have data that need to be
+already maintaining. TabletServers record which WALs have data that need to be
 replicated to the `accumulo.metadata` table. The Master uses these records,
 combined with the local Accumulo table that the WAL was used with, to create records
 in the `replication` table which track which peers the given WAL should be