Fixing grammar/punctuation in UNIKERNELS.md (nanovms#1345)

Author: JonathanMcCormickJr

UNIKERNELS.md

@@ -1,30 +1,30 @@
-# What is a Unikernel
+# What is a Unikernel?
 
-A unikernel is a single process system that is specifically designed to
-run only one application. It makes it a great fit for modern cloud
-environments because of it's performance, security and size.
+A unikernel is a single-process system that is specifically designed to
+run only one application. It is a great fit for modern cloud
+environments because of its performance, security, and size.
 
 ## Single Process
 
 Linux systems have archaic design concepts rooted in the 1960s from when
 machines cost half a million dollars and needed to run multiple programs
-for multiple users. Today developers go out of their way to isolated
-programs from each other if for no reason other than manageability
+for multiple users. Today, developers go out of their way to isolate
+programs from each other if for no other reason than manageability
 concerns.
 
-A unikernel embraces the single process concept while allowing the use
-of multiple threads. For languages such as Go this fits well. For
-interpreted languages such as ruby and python developers in these
+A unikernel embraces the single-process concept while allowing the use
+of multiple threads. For languages such as Go, this fits well. For
+interpreted languages such as Ruby and Python, developers in these
 languages typically load balance a set of application servers to enable
-a greater degree of concurrency. In the unikernel world we do the same
-thing but those app servers become full fledged vms and can make use of
-existing load balancers without having to do back flips.
+a greater degree of concurrency. In the unikernel world, we do the same
+thing but those app servers become full-fledged VMs and can make use of
+existing load balancers without having to do backflips.
 
 ## No Shell/No Users
 
 This is a security design constraint. There is no shell to remotely log
 into and there is no concept of users. While OPS has a stubbed/fake user
 it is only present to implement underlying libc calls and has no
-relevance otherwise. This also means that modern unix permissions don't
+relevance otherwise. This also means that modern Unix permissions don't
 have much meaning inside of a unikernel because there is only one
 program running and no users.